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14 <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="Util"></a>Util</h1><div class=CBody><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#Util" >Util</a></td><td class=SDescription></td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#Util.Functions_and_Properties" >Functions and Properties</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getElement" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">getElement</a></td><td class=SDescription>This is the old $() from prototype</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.extend" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">extend</a></td><td class=SDescription>Copy all properties of a source object to a destination object. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.removeItem" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">removeItem</a></td><td class=SDescription>Remove an object from an array. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.clearArray" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">clearArray</a></td><td class=SDescription><b>Deprecated</b>. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.indexOf" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">indexOf</a></td><td class=SDescription>Seems to exist already in FF, but not in MOZ.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.modifyDOMElement" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">modifyDOMElement</a></td><td class=SDescription>Modifies many properties of a DOM element all at once. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.createDiv" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">createDiv</a></td><td class=SDescription>Creates a new div and optionally set some standard attributes. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.createImage" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">createImage</a></td><td class=SDescription>Creates an img element with specific attribute values.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.setOpacity" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">setOpacity</a></td><td class=SDescription><b>Deprecated</b>. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.onImageLoad" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">onImageLoad</a></td><td class=SDescription>Bound to image load events. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#Util.onImageLoadErrorColor" >onImageLoadErrorColor</a></td><td class=SDescription>{String} The color tiles with load errors will turn. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#Util.IMAGE_RELOAD_ATTEMPTS" >IMAGE_RELOAD_ATTEMPTS</a></td><td class=SDescription>{Integer} How many times should we try to reload an image before giving up? </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.onImageLoadError" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">onImageLoadError</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#Util.alphaHackNeeded" >alphaHackNeeded</a></td><td class=SDescription>{Boolean} true if the png alpha hack is necessary and possible, false otherwise.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.alphaHack" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">alphaHack</a></td><td class=SDescription>Checks whether it’s necessary (and possible) to use the png alpha hack which allows alpha transparency for png images under Internet Explorer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.modifyAlphaImageDiv" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">modifyAlphaImageDiv</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.createAlphaImageDiv" id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">createAlphaImageDiv</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.upperCaseObject" id=link15 onMouseOver="ShowTip(event, 'tt15', 'link15')" onMouseOut="HideTip('tt15')">upperCaseObject</a></td><td class=SDescription>Creates a new hashtable and copies over all the keys from the passed-in object, but storing them under an uppercased version of the key at which they were stored.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.applyDefaults" id=link16 onMouseOver="ShowTip(event, 'tt16', 'link16')" onMouseOut="HideTip('tt16')">applyDefaults</a></td><td class=SDescription>Takes an object and copies any properties that don’t exist from another properties, by analogy with OpenLayers.Util.extend() from Prototype.js.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getParameterString" id=link17 onMouseOver="ShowTip(event, 'tt17', 'link17')" onMouseOut="HideTip('tt17')">getParameterString</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#Util.ImgPath" >ImgPath</a></td><td class=SDescription>{String} Default is ‘’.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getImagesLocation" id=link18 onMouseOver="ShowTip(event, 'tt18', 'link18')" onMouseOut="HideTip('tt18')">getImagesLocation</a></td><td class=SDescription>{String} The fully formatted image location string</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.Try" id=link19 onMouseOver="ShowTip(event, 'tt19', 'link19')" onMouseOut="HideTip('tt19')">Try</a></td><td class=SDescription>Execute functions until one of them doesn’t throw an error. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getNodes" id=link20 onMouseOver="ShowTip(event, 'tt20', 'link20')" onMouseOut="HideTip('tt20')">getNodes</a></td><td class=SDescription>These could/should be made namespace aware?</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util._getNodes" id=link21 onMouseOver="ShowTip(event, 'tt21', 'link21')" onMouseOut="HideTip('tt21')">_getNodes</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getTagText" id=link22 onMouseOver="ShowTip(event, 'tt22', 'link22')" onMouseOut="HideTip('tt22')">getTagText</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getXmlNodeValue" id=link23 onMouseOver="ShowTip(event, 'tt23', 'link23')" onMouseOut="HideTip('tt23')">getXmlNodeValue</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.mouseLeft" id=link24 onMouseOver="ShowTip(event, 'tt24', 'link24')" onMouseOut="HideTip('tt24')">mouseLeft</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#Util.precision" >precision</a></td><td class=SDescription>{Number} The number of significant digits to retain to avoid floating point precision errors.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.toFloat" id=link25 onMouseOver="ShowTip(event, 'tt25', 'link25')" onMouseOut="HideTip('tt25')">toFloat</a></td><td class=SDescription>Convenience method to cast an object to a Number, rounded to the desired floating point precision.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.rad" id=link26 onMouseOver="ShowTip(event, 'tt26', 'link26')" onMouseOut="HideTip('tt26')">rad</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.distVincenty" id=link27 onMouseOver="ShowTip(event, 'tt27', 'link27')" onMouseOut="HideTip('tt27')">distVincenty</a></td><td class=SDescription>Given two objects representing points with geographic coordinates, this calculates the distance between those points on the surface of an ellipsoid.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getParameters" id=link28 onMouseOver="ShowTip(event, 'tt28', 'link28')" onMouseOut="HideTip('tt28')">getParameters</a></td><td class=SDescription>Parse the parameters from a URL or from the current page itself into a JavaScript Object. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getArgs" id=link29 onMouseOver="ShowTip(event, 'tt29', 'link29')" onMouseOut="HideTip('tt29')">getArgs</a></td><td class=SDescription><b>Deprecated</b>. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#Util.lastSeqID" >lastSeqID</a></td><td class=SDescription>{Integer} The ever-incrementing count variable. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.createUniqueID" id=link30 onMouseOver="ShowTip(event, 'tt30', 'link30')" onMouseOut="HideTip('tt30')">createUniqueID</a></td><td class=SDescription>Create a unique identifier for this session. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#Util.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#Util.INCHES_PER_UNIT" >INCHES_PER_UNIT</a></td><td class=SDescription>{Object} Constant inches per unit -- borrowed from MapServer mapscale.c derivation of nautical miles from <a href="http://en.wikipedia.org/wiki/Nautical_mile" class=LURL target=_top>http://en.wikipedia.org/wiki/Nautical_mile</a> Includes the full set of units supported by CS-MAP (<a href="http://trac.osgeo.org/csmap/" class=LURL target=_top>http://trac.osgeo.org/csmap/</a>) and PROJ.4 (<a href="http://trac.osgeo.org/proj/" class=LURL target=_top>http://trac.osgeo.org/proj/</a>) The hardcoded table is maintain in a CS-MAP source code module named CSdataU.c The hardcoded table of PROJ.4 units are in pj_units.c.</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#Util.DOTS_PER_INCH" >DOTS_PER_INCH</a></td><td class=SDescription>{Integer} 72 (A sensible default)</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#Util.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.normalizeScale" id=link31 onMouseOver="ShowTip(event, 'tt31', 'link31')" onMouseOut="HideTip('tt31')">normalizeScale</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getResolutionFromScale" id=link32 onMouseOver="ShowTip(event, 'tt32', 'link32')" onMouseOut="HideTip('tt32')">getResolutionFromScale</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getScaleFromResolution" id=link33 onMouseOver="ShowTip(event, 'tt33', 'link33')" onMouseOut="HideTip('tt33')">getScaleFromResolution</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.safeStopPropagation" id=link34 onMouseOver="ShowTip(event, 'tt34', 'link34')" onMouseOut="HideTip('tt34')">safeStopPropagation</a></td><td class=SDescription><b>Deprecated</b>. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.pagePositon" >pagePositon</a></td><td class=SDescription>Calculates the position of an element on the page.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.isEquivalentUrl" id=link35 onMouseOver="ShowTip(event, 'tt35', 'link35')" onMouseOut="HideTip('tt35')">isEquivalentUrl</a></td><td class=SDescription>Test two URLs for equivalence.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.createUrlObject" id=link36 onMouseOver="ShowTip(event, 'tt36', 'link36')" onMouseOut="HideTip('tt36')">createUrlObject</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.removeTail" id=link37 onMouseOver="ShowTip(event, 'tt37', 'link37')" onMouseOut="HideTip('tt37')">removeTail</a></td><td class=SDescription>Takes a url and removes everything after the ? </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getBrowserName" id=link38 onMouseOver="ShowTip(event, 'tt38', 'link38')" onMouseOut="HideTip('tt38')">getBrowserName</a></td><td class=SDescription>{String} A string which specifies which is the current browser in which we are running.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Util.getRenderedDimensions" id=link39 onMouseOver="ShowTip(event, 'tt39', 'link39')" onMouseOut="HideTip('tt39')">getRenderedDimensions</a></td><td class=SDescription>Renders the contentHTML offscreen to determine actual dimensions for popup sizing. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Util.getScrollbarWidth" id=link40 onMouseOver="ShowTip(event, 'tt40', 'link40')" onMouseOut="HideTip('tt40')">getScrollbarWidth</a></td><td class=SDescription>This function has been modified by the OpenLayers from the original version, written by Matthew Eernisse and released under the Apache 2 license here:</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
16 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="Util.Functions_and_Properties"></a>Functions and Properties</h3></div></div>
18 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getElement"></a>getElement</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getElement = function()</td></tr></table></blockquote><p>This is the old $() from prototype</p></div></div></div>
20 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.extend"></a>extend</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.extend = function(</td><td class=PParameter nowrap>destination,</td></tr><tr><td></td><td class=PParameter nowrap>source</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Copy all properties of a source object to a destination object. Modifies the passed in destination object. Any properties on the source object that are set to undefined will not be (re)set on the destination object.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>destination</td><td class=CDLDescription>{Object} The object that will be modified</td></tr><tr><td class=CDLEntry>source</td><td class=CDLDescription>{Object} The object with properties to be set on the destination</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} The destination object.</p></div></div></div>
22 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.removeItem"></a>removeItem</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.removeItem = function(</td><td class=PParameter nowrap>array,</td></tr><tr><td></td><td class=PParameter nowrap>item</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Remove an object from an array. Iterates through the array to find the item, then removes it.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>array</td><td class=CDLDescription>{Array}</td></tr><tr><td class=CDLEntry>item</td><td class=CDLDescription>{Object}</td></tr></table><p>Return {Array} A reference to the array</p></div></div></div>
24 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.clearArray"></a>clearArray</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.clearArray = function(</td><td class=PParameter nowrap>array</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p><b>Deprecated</b>. This function will disappear in 3.0. Please use “array.length = 0” instead.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>array</td><td class=CDLDescription>{Array}</td></tr></table></div></div></div>
26 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.indexOf"></a>indexOf</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.indexOf = function(</td><td class=PParameter nowrap>array,</td></tr><tr><td></td><td class=PParameter nowrap>obj</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Seems to exist already in FF, but not in MOZ.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>array</td><td class=CDLDescription>{Array}</td></tr><tr><td class=CDLEntry>obj</td><td class=CDLDescription>{Object}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Integer} The index at, which the object was found in the array. If not found, returns -1.</p></div></div></div>
28 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.modifyDOMElement"></a>modifyDOMElement</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.modifyDOMElement = function(</td><td class=PParameter nowrap>element,</td></tr><tr><td></td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>overflow,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Modifies many properties of a DOM element all at once. Passing in null to an individual parameter will avoid setting the attribute.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String} The element id attribute to set.</td></tr><tr><td class=CDLEntry>px</td><td class=CDLDescription>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link41 onMouseOver="ShowTip(event, 'tt41', 'link41')" onMouseOut="HideTip('tt41')">OpenLayers.Pixel</a>} The left and top style position.</td></tr><tr><td class=CDLEntry>sz</td><td class=CDLDescription>{<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link42 onMouseOver="ShowTip(event, 'tt42', 'link42')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>} The width and height style attributes.</td></tr><tr><td class=CDLEntry>position</td><td class=CDLDescription>{String} The position attribute. eg: absolute, relative, etc.</td></tr><tr><td class=CDLEntry>border</td><td class=CDLDescription>{String} The style.border attribute. eg: solid black 2px</td></tr><tr><td class=CDLEntry>overflow</td><td class=CDLDescription>{String} The style.overview attribute.</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Fractional value (0.0 - 1.0)</td></tr></table></div></div></div>
30 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.createDiv"></a>createDiv</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createDiv = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>overflow,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Creates a new div and optionally set some standard attributes. Null may be passed to each parameter if you do not wish to set a particular attribute. Note - zIndex is NOT set on the resulting div.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String} An identifier for this element. If no id is passed an identifier will be created automatically.</td></tr><tr><td class=CDLEntry>px</td><td class=CDLDescription>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link43 onMouseOver="ShowTip(event, 'tt41', 'link43')" onMouseOut="HideTip('tt41')">OpenLayers.Pixel</a>} The element left and top position.</td></tr><tr><td class=CDLEntry>sz</td><td class=CDLDescription>{<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link44 onMouseOver="ShowTip(event, 'tt42', 'link44')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>} The element width and height.</td></tr><tr><td class=CDLEntry>imgURL</td><td class=CDLDescription>{String} A url pointing to an image to use as a background image.</td></tr><tr><td class=CDLEntry>position</td><td class=CDLDescription>{String} The style.position value. eg: absolute, relative etc.</td></tr><tr><td class=CDLEntry>border</td><td class=CDLDescription>{String} The the style.border value. eg: 2px solid black</td></tr><tr><td class=CDLEntry>overflow</td><td class=CDLDescription>{String} The style.overflow value. Eg. hidden</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Fractional value (0.0 - 1.0)</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} A DOM Div created with the specified attributes.</p></div></div></div>
32 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.createImage"></a>createImage</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createImage = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>opacity,</td></tr><tr><td></td><td class=PParameter nowrap>delayDisplay</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Creates an img element with specific attribute values.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String} The id field for the img. If none assigned one will be automatically generated.</td></tr><tr><td class=CDLEntry>px</td><td class=CDLDescription>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link45 onMouseOver="ShowTip(event, 'tt41', 'link45')" onMouseOut="HideTip('tt41')">OpenLayers.Pixel</a>} The left and top positions.</td></tr><tr><td class=CDLEntry>sz</td><td class=CDLDescription>{<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link46 onMouseOver="ShowTip(event, 'tt42', 'link46')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>} The style.width and style.height values.</td></tr><tr><td class=CDLEntry>imgURL</td><td class=CDLDescription>{String} The url to use as the image source.</td></tr><tr><td class=CDLEntry>position</td><td class=CDLDescription>{String} The style.position value.</td></tr><tr><td class=CDLEntry>border</td><td class=CDLDescription>{String} The border to place around the image.</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Fractional value (0.0 - 1.0)</td></tr><tr><td class=CDLEntry>delayDisplay</td><td class=CDLDescription>{Boolean} If true waits until the image has been loaded.</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} A DOM Image created with the specified attributes.</p></div></div></div>
34 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.setOpacity"></a>setOpacity</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.setOpacity = function(</td><td class=PParameter nowrap>element,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p><b>Deprecated</b>. This function has been deprecated. Instead, please use <OpenLayers.Util.modifyDOMElement> or <OpenLayers.Util.modifyAlphaImageDiv></p><p>Set the opacity of a DOM Element Note that for this function to work in IE, elements must “have layout” according to: <a href="http://msdn.microsoft.com/workshop/author/dhtml/reference/properties/haslayout.asp" class=LURL target=_top>http://msdn.microsoft.com<wbr>/workshop<wbr>/author<wbr>/dhtml<wbr>/reference<wbr>/properties<wbr>/haslayout.asp</a></p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>element</td><td class=CDLDescription>{DOMElement} Set the opacity on this DOM element</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Opacity value (0.0 - 1.0)</td></tr></table></div></div></div>
36 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.onImageLoad"></a>onImageLoad</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.onImageLoad = function()</td></tr></table></blockquote><p>Bound to image load events. For all images created with <a href="#Util.createImage" class=LFunction id=link47 onMouseOver="ShowTip(event, 'tt8', 'link47')" onMouseOut="HideTip('tt8')">createImage</a> or <a href="#Util.createAlphaImageDiv" class=LFunction id=link48 onMouseOver="ShowTip(event, 'tt14', 'link48')" onMouseOut="HideTip('tt14')">createAlphaImageDiv</a>, this function will be bound to the load event.</p></div></div></div>
38 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.onImageLoadErrorColor"></a>onImageLoadErrorColor</h3><div class=CBody><p>{String} The color tiles with load errors will turn. Default is “pink”</p></div></div></div>
40 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.IMAGE_RELOAD_ATTEMPTS"></a>IMAGE_RELOAD_ATTEMPTS</h3><div class=CBody><p>{Integer} How many times should we try to reload an image before giving up? Default is 0</p></div></div></div>
42 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.onImageLoadError"></a>onImageLoadError</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.onImageLoadError = function()</td></tr></table></blockquote></div></div></div>
44 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.alphaHackNeeded"></a>alphaHackNeeded</h3><div class=CBody><p>{Boolean} true if the png alpha hack is necessary and possible, false otherwise.</p></div></div></div>
46 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.alphaHack"></a>alphaHack</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.alphaHack = function()</td></tr></table></blockquote><p>Checks whether it’s necessary (and possible) to use the png alpha hack which allows alpha transparency for png images under Internet Explorer.</p><h4 class=CHeading>Returns</h4><p>{Boolean} true if the png alpha hack is necessary and possible, false otherwise.</p></div></div></div>
48 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.modifyAlphaImageDiv"></a>modifyAlphaImageDiv</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.modifyAlphaImageDiv = function(</td><td class=PParameter nowrap>div,</td></tr><tr><td></td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>sizing,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>div</td><td class=CDLDescription>{DOMElement} Div containing Alpha-adjusted Image</td></tr><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>px</td><td class=CDLDescription>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link49 onMouseOver="ShowTip(event, 'tt41', 'link49')" onMouseOut="HideTip('tt41')">OpenLayers.Pixel</a>}</td></tr><tr><td class=CDLEntry>sz</td><td class=CDLDescription>{<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link50 onMouseOver="ShowTip(event, 'tt42', 'link50')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>}</td></tr><tr><td class=CDLEntry>imgURL</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>position</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>border</td><td class=CDLDescription>{String} sizing {String} ‘crop’, ‘scale’, or ‘image’. Default is “scale”</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Fractional value (0.0 - 1.0)</td></tr></table></div></div></div>
50 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.createAlphaImageDiv"></a>createAlphaImageDiv</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createAlphaImageDiv = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>sizing,</td></tr><tr><td></td><td class=PParameter nowrap>opacity,</td></tr><tr><td></td><td class=PParameter nowrap>delayDisplay</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>px</td><td class=CDLDescription>{<a href="BaseTypes/Pixel-js.html#OpenLayers.Pixel" class=LClass id=link51 onMouseOver="ShowTip(event, 'tt41', 'link51')" onMouseOut="HideTip('tt41')">OpenLayers.Pixel</a>}</td></tr><tr><td class=CDLEntry>sz</td><td class=CDLDescription>{<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link52 onMouseOver="ShowTip(event, 'tt42', 'link52')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>}</td></tr><tr><td class=CDLEntry>imgURL</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>position</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>border</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>sizing</td><td class=CDLDescription>{String} ‘crop’, ‘scale’, or ‘image’. Default is “scale”</td></tr><tr><td class=CDLEntry>opacity</td><td class=CDLDescription>{Float} Fractional value (0.0 - 1.0)</td></tr><tr><td class=CDLEntry>delayDisplay</td><td class=CDLDescription>{Boolean} If true waits until the image has been loaded.</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} A DOM Div created with a DOM Image inside it. If the hack is needed for transparency in IE, it is added.</p></div></div></div>
52 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.upperCaseObject"></a>upperCaseObject</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.upperCaseObject = function (</td><td class=PParameter nowrap>object</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Creates a new hashtable and copies over all the keys from the passed-in object, but storing them under an uppercased version of the key at which they were stored.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>object</td><td class=CDLDescription>{Object}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} A new Object with all the same keys but uppercased</p></div></div></div>
54 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.applyDefaults"></a>applyDefaults</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.applyDefaults = function (</td><td class=PParameter nowrap>to,</td></tr><tr><td></td><td class=PParameter nowrap>from</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Takes an object and copies any properties that don’t exist from another properties, by analogy with OpenLayers.Util.extend() from Prototype.js.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>to</td><td class=CDLDescription>{Object} The destination object.</td></tr><tr><td class=CDLEntry>from</td><td class=CDLDescription>{Object} The source object. Any properties of this object that are undefined in the to object will be set on the to object.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} A reference to the to object. Note that the to argument is modified in place and returned by this function.</p></div></div></div>
56 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getParameterString"></a>getParameterString</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getParameterString = function(</td><td class=PParameter nowrap>params</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>params</td><td class=CDLDescription>{Object}</td></tr></table><h4 class=CHeading>Returns</h4><p>{String} A concatenation of the properties of an object in http parameter notation. (ex. <i>”key1=value1&key2=value2&key3=value3”</i>) If a parameter is actually a list, that parameter will then be set to a comma-seperated list of values (foo,bar) instead of being URL escaped (foo%3Abar).</p></div></div></div>
58 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.ImgPath"></a>ImgPath</h3><div class=CBody><p>{String} Default is ‘’.</p></div></div></div>
60 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getImagesLocation"></a>getImagesLocation</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getImagesLocation = function()</td></tr></table></blockquote><h4 class=CHeading>Returns</h4><p>{String} The fully formatted image location string</p></div></div></div>
62 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.Try"></a>Try</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.Try = function()</td></tr></table></blockquote><p>Execute functions until one of them doesn’t throw an error. Capitalized because “try” is a reserved word in JavaScript. Taken directly from OpenLayers.Util.Try()</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>[*]</td><td class=CDLDescription>{Function} Any number of parameters may be passed to Try() It will attempt to execute each of them until one of them successfully executes. If none executes successfully, returns null.</td></tr></table><h4 class=CHeading>Returns</h4><p>{*} The value returned by the first successfully executed function.</p></div></div></div>
64 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getNodes"></a>getNodes</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getNodes=function(</td><td class=PParameter nowrap>p,</td></tr><tr><td></td><td class=PParameter nowrap>tagName</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>These could/should be made namespace aware?</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>p</td><td class=CDLDescription>{}</td></tr><tr><td class=CDLEntry>tagName</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Array}</p></div></div></div>
66 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util._getNodes"></a>_getNodes</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util._getNodes=function(</td><td class=PParameter nowrap>nodes,</td></tr><tr><td></td><td class=PParameter nowrap>tagName</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>nodes</td><td class=CDLDescription>{Array}</td></tr><tr><td class=CDLEntry>tagName</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Array}</p></div></div></div>
68 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getTagText"></a>getTagText</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getTagText = function (</td><td class=PParameter nowrap>parent,</td></tr><tr><td></td><td class=PParameter nowrap>item,</td></tr><tr><td></td><td class=PParameter nowrap>index</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>parent</td><td class=CDLDescription>{}</td></tr><tr><td class=CDLEntry>item</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>index</td><td class=CDLDescription>{Integer}</td></tr></table><h4 class=CHeading>Returns</h4><p>{String}</p></div></div></div>
70 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getXmlNodeValue"></a>getXmlNodeValue</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getXmlNodeValue = function(</td><td class=PParameter nowrap>node</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{XMLNode}</td></tr></table><h4 class=CHeading>Returns</h4><p>{String} The text value of the given node, without breaking in firefox or IE</p></div></div></div>
72 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.mouseLeft"></a>mouseLeft</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.mouseLeft = function (</td><td class=PParameter nowrap>evt,</td></tr><tr><td></td><td class=PParameter nowrap>div</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event}</td></tr><tr><td class=CDLEntry>div</td><td class=CDLDescription>{HTMLDivElement}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean}</p></div></div></div>
74 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.precision"></a>precision</h3><div class=CBody><p>{Number} The number of significant digits to retain to avoid floating point precision errors.</p><p>We use 14 as a “safe” default because, although IEEE 754 double floats (standard on most modern operating systems) support up to about 16 significant digits, 14 significant digits are sufficient to represent sub-millimeter accuracy in any coordinate system that anyone is likely to use with OpenLayers.</p><p>If DEFAULT_PRECISION is set to 0, the original non-truncating behavior of OpenLayers <2.8 is preserved. Be aware that this will cause problems with certain projections, e.g. spherical Mercator.</p></div></div></div>
76 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.toFloat"></a>toFloat</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.toFloat = function (</td><td class=PParameter nowrap>number,</td></tr><tr><td></td><td class=PParameter nowrap>precision</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Convenience method to cast an object to a Number, rounded to the desired floating point precision.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>number</td><td class=CDLDescription>{Number} The number to cast and round.</td></tr><tr><td class=CDLEntry>precision</td><td class=CDLDescription>{Number} An integer suitable for use with Number.toPrecision(). Defaults to OpenLayers.Util.DEFAULT_PRECISION. If set to 0, no rounding is performed.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Number} The cast, rounded number.</p></div></div></div>
78 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.rad"></a>rad</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.rad = function(</td><td class=PParameter nowrap>x</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>x</td><td class=CDLDescription>{Float}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float}</p></div></div></div>
80 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.distVincenty"></a>distVincenty</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.distVincenty=function(</td><td class=PParameter nowrap>p1,</td></tr><tr><td></td><td class=PParameter nowrap>p2</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given two objects representing points with geographic coordinates, this calculates the distance between those points on the surface of an ellipsoid.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>p1</td><td class=CDLDescription>{<a href="BaseTypes/LonLat-js.html#OpenLayers.LonLat" class=LClass id=link53 onMouseOver="ShowTip(event, 'tt43', 'link53')" onMouseOut="HideTip('tt43')">OpenLayers.LonLat</a>} (or any object with both .lat, .lon properties)</td></tr><tr><td class=CDLEntry>p2</td><td class=CDLDescription>{<a href="BaseTypes/LonLat-js.html#OpenLayers.LonLat" class=LClass id=link54 onMouseOver="ShowTip(event, 'tt43', 'link54')" onMouseOut="HideTip('tt43')">OpenLayers.LonLat</a>} (or any object with both .lat, .lon properties)</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float} The distance (in km) between the two input points as measured on an ellipsoid. Note that the input point objects must be in geographic coordinates (decimal degrees) and the return distance is in kilometers.</p></div></div></div>
82 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getParameters"></a>getParameters</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getParameters = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Parse the parameters from a URL or from the current page itself into a JavaScript Object. Note that parameter values with commas are separated out into an Array.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>url</td><td class=CDLDescription>{String} Optional url used to extract the query string. If null, query string is taken from page location.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} An object of key/value pairs from the query string.</p></div></div></div>
84 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getArgs"></a>getArgs</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getArgs = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p><b>Deprecated</b>. Will be removed in 3.0. Please use instead <OpenLayers.Util.getParameters></p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>url</td><td class=CDLDescription>{String} Optional url used to extract the query string. If null, query string is taken from page location.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} An object of key/value pairs from the query string.</p></div></div></div>
86 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="Util.lastSeqID"></a>lastSeqID</h3><div class=CBody><p>{Integer} The ever-incrementing count variable. Used for generating unique ids.</p></div></div></div>
88 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.createUniqueID"></a>createUniqueID</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createUniqueID = function(</td><td class=PParameter nowrap>prefix</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Create a unique identifier for this session. Each time this function is called, a counter is incremented. The return will be the optional prefix (defaults to “id_”) appended with the counter value.</p><h4 class=CHeading>Parameters</h4><p>prefix {String} Optionsal string to prefix unique id. Default is “id_”.</p><h4 class=CHeading>Returns</h4><p>{String} A unique id string, built on the passed in prefix.</p></div></div></div>
90 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="Util.Constants"></a>Constants</h3></div></div>
92 <div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="Util.INCHES_PER_UNIT"></a>INCHES_PER_UNIT</h3><div class=CBody><p>{Object} Constant inches per unit -- borrowed from MapServer mapscale.c derivation of nautical miles from <a href="http://en.wikipedia.org/wiki/Nautical_mile" class=LURL target=_top>http://en.wikipedia.org/wiki/Nautical_mile</a> Includes the full set of units supported by CS-MAP (<a href="http://trac.osgeo.org/csmap/" class=LURL target=_top>http://trac.osgeo.org/csmap/</a>) and PROJ.4 (<a href="http://trac.osgeo.org/proj/" class=LURL target=_top>http://trac.osgeo.org/proj/</a>) The hardcoded table is maintain in a CS-MAP source code module named CSdataU.c The hardcoded table of PROJ.4 units are in pj_units.c.</p></div></div></div>
94 <div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="Util.DOTS_PER_INCH"></a>DOTS_PER_INCH</h3><div class=CBody><p>{Integer} 72 (A sensible default)</p></div></div></div>
96 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="Util.Functions"></a>Functions</h3></div></div>
98 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.normalizeScale"></a>normalizeScale</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.normalizeScale = function (</td><td class=PParameter nowrap>scale</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>scale</td><td class=CDLDescription>{float}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float} A normalized scale value, in 1 / X format. This means that if a value less than one ( already 1/x) is passed in, it just returns scale directly. Otherwise, it returns 1 / scale</p></div></div></div>
100 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getResolutionFromScale"></a>getResolutionFromScale</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getResolutionFromScale = function (</td><td class=PParameter nowrap>scale,</td></tr><tr><td></td><td class=PParameter nowrap>units</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>scale</td><td class=CDLDescription>{Float}</td></tr><tr><td class=CDLEntry>units</td><td class=CDLDescription>{String} Index into OpenLayers.INCHES_PER_UNIT hashtable. Default is degrees</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float} The corresponding resolution given passed-in scale and unit parameters.</p></div></div></div>
102 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getScaleFromResolution"></a>getScaleFromResolution</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getScaleFromResolution = function (</td><td class=PParameter nowrap>resolution,</td></tr><tr><td></td><td class=PParameter nowrap>units</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>resolution</td><td class=CDLDescription>{Float}</td></tr><tr><td class=CDLEntry>units</td><td class=CDLDescription>{String} Index into OpenLayers.INCHES_PER_UNIT hashtable. Default is degrees</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float} The corresponding scale given passed-in resolution and unit parameters.</p></div></div></div>
104 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.safeStopPropagation"></a>safeStopPropagation</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.safeStopPropagation = function(</td><td class=PParameter nowrap>evt</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p><b>Deprecated</b>. This function has been deprecated. Please use directly <a href="Events-js.html#OpenLayers.Event.stop" class=LFunction id=link55 onMouseOver="ShowTip(event, 'tt44', 'link55')" onMouseOut="HideTip('tt44')">OpenLayers.Event.stop</a> passing ‘true’ as the 2nd argument (preventDefault)</p><p>Safely stop the propagation of an event <b>without</b> preventing the default browser action from occurring.</p><h4 class=CHeading>Parameter</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Event}</td></tr></table></div></div></div>
106 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.pagePositon"></a>pagePositon</h3><div class=CBody><p>Calculates the position of an element on the page.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>forElement</td><td class=CDLDescription>{DOMElement}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Array} two item array, L value then T value.</p></div></div></div>
108 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.isEquivalentUrl"></a>isEquivalentUrl</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.isEquivalentUrl = function(</td><td class=PParameter nowrap>url1,</td></tr><tr><td></td><td class=PParameter nowrap>url2,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Test two URLs for equivalence.</p><p>Setting ‘ignoreCase’ allows for case-independent comparison.</p><h4 class=CHeading>Comparison is based on</h4><ul><li>Protocol</li><li>Host (evaluated without the port)</li><li>Port (set ‘ignorePort80’ to ignore “80” values)</li><li>Hash ( set ‘ignoreHash’ to disable)</li><li>Pathname (for relative <-> absolute comparison)</li><li>Arguments (so they can be out of order)</li></ul><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>url1</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>url2</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Allows for customization of comparison:</td></tr><tr><td class=CDLEntry>’ignoreCase’</td><td class=CDLDescription>Default is True</td></tr><tr><td class=CDLEntry>’ignorePort80’</td><td class=CDLDescription>Default is True</td></tr><tr><td class=CDLEntry>’ignoreHash’</td><td class=CDLDescription>Default is True</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} Whether or not the two URLs are equivalent</p></div></div></div>
110 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.createUrlObject"></a>createUrlObject</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createUrlObject = function(</td><td class=PParameter nowrap>url,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>url</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} A hash of options. Can be one of: ignoreCase: lowercase url, ignorePort80: don’t include explicit port if port is 80, ignoreHash: Don’t include part of url after the hash (#).</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} An object with separate url, a, port, host, and args parsed out and ready for comparison</p></div></div></div>
112 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.removeTail"></a>removeTail</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.removeTail = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Takes a url and removes everything after the ? and #</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>url</td><td class=CDLDescription>{String} The url to process</td></tr></table><h4 class=CHeading>Returns</h4><p>{String} The string with all queryString and Hash removed</p></div></div></div>
114 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getBrowserName"></a>getBrowserName</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getBrowserName = function()</td></tr></table></blockquote><h4 class=CHeading>Returns</h4><p>{String} A string which specifies which is the current browser in which we are running.</p><h4 class=CHeading>Currently-supported browser detection and codes</h4><ul><li>’opera’ -- Opera</li><li>’msie’ -- Internet Explorer</li><li>’safari’ -- Safari</li><li>’firefox’ -- FireFox</li><li>’mozilla’ -- Mozilla</li></ul><p>If we are unable to property identify the browser, we return an empty string.</p></div></div></div>
116 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getRenderedDimensions"></a>getRenderedDimensions</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getRenderedDimensions = function(</td><td class=PParameter nowrap>contentHTML,</td></tr><tr><td></td><td class=PParameter nowrap>size,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Renders the contentHTML offscreen to determine actual dimensions for popup sizing. As we need layout to determine dimensions the content is rendered -9999px to the left and absolute to ensure the scrollbars do not flicker</p><h4 class=CHeading>Parameters</h4><p>contentHTML size - {<a href="BaseTypes/Size-js.html#OpenLayers.Size" class=LClass id=link56 onMouseOver="ShowTip(event, 'tt42', 'link56')" onMouseOut="HideTip('tt42')">OpenLayers.Size</a>} If either the ‘w’ or ‘h’ properties is specified, we fix that dimension of the div to be measured. This is useful in the case where we have a limit in one dimension and must therefore meaure the flow in the other dimension. options - {Object} displayClass - {String} Optional parameter. A CSS class name(s) string to provide the CSS context of the rendered content. containerElement - {DOMElement} Optional parameter. Insert the HTML to this node instead of the body root when calculating dimensions.</p><h4 class=CHeading>Returns</h4><p>{OpenLayers.Size}</p></div></div></div>
118 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Util.getScrollbarWidth"></a>getScrollbarWidth</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getScrollbarWidth = function()</td></tr></table></blockquote><p>This function has been modified by the OpenLayers from the original version, written by Matthew Eernisse and released under the Apache 2 license here:</p><p><a href="http://www.fleegix.org/articles/2006/05/30/getting-the-scrollbar-width-in-pixels" class=LURL target=_top>http://www.fleegix.org<wbr>/articles<wbr>/2006<wbr>/05<wbr>/30<wbr>/getting-the-scrollbar-width-in-pixels</a></p><p>It has been modified simply to cache its value, since it is physically impossible that this code could ever run in more than one browser at once.</p><h4 class=CHeading>Returns</h4><p>{Integer}</p></div></div></div>
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href="Format/Filter/v1-js.html">v1</a></div></div><div class=MEntry><div class=MFile><a href="Format/Filter/v1_0_0-js.html">v1_0_0</a></div></div><div class=MEntry><div class=MFile><a href="Format/Filter/v1_1_0-js.html">v1_1_0</a></div></div></div></div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent7')">GML</a><div class=MGroupContent id=MGroupContent7><div class=MEntry><div class=MFile><a href="Format/GML-js.html">GML</a></div></div><div class=MEntry><div class=MFile><a href="Format/GML/Base-js.html">Base</a></div></div><div class=MEntry><div class=MFile><a href="Format/GML/v2-js.html">v2</a></div></div><div class=MEntry><div class=MFile><a href="Format/GML/v3-js.html">v3</a></div></div></div></div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent8')">SLD</a><div class=MGroupContent id=MGroupContent8><div class=MEntry><div class=MFile><a href="Format/SLD-js.html">SLD</a></div></div><div class=MEntry><div 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href="Format/WFST/v1_1_0-js.html">v1_1_0</a></div></div></div></div></div><div class=MEntry><div class=MFile><a href="Format/WKT-js.html">WKT</a></div></div><div class=MEntry><div class=MFile><a href="Format/WMSCapabilities-js.html">WMSCapabilities</a></div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent12')">WMSCapabilities</a><div class=MGroupContent id=MGroupContent12><div class=MEntry><div class=MFile><a href="Format/WMSCapabilities/v1_1-js.html">WMSCapabilities.v1_1</a></div></div><div class=MEntry><div class=MFile><a href="Format/WMSCapabilities/v1_1_0-js.html">WMSCapabilities/<wbr>v1_1_0</a></div></div><div class=MEntry><div class=MFile><a href="Format/WMSCapabilities/v1_1_1-js.html">WMSCapabilities/<wbr>v1_1_1</a></div></div></div></div></div><div class=MEntry><div class=MFile><a href="Format/WMSDescribeLayer-js.html">WMSDescribeLayer</a></div></div><div class=MEntry><div class=MFile><a href="Format/WMSDescribeLayer/v1_1-js.html">WMSDescribeLayer.v1_1</a></div></div><div class=MEntry><div class=MFile><a href="Format/WMSGetFeatureInfo-js.html">WMSGetFeatureInfo</a></div></div><div class=MEntry><div class=MFile><a href="Format/XML-js.html">XML</a></div></div></div></div></div></div></div></div><div class=MEntry><div class=MGroup><a href="javascript:ToggleMenu('MGroupContent15')">Geometry</a><div class=MGroupContent id=MGroupContent15><div class=MEntry><div class=MFile><a href="Geometry-js.html">Geometry</a></div></div><div class=MEntry><div class=MFile><a href="Geometry/Collection-js.html">Collection</a></div></div><div class=MEntry><div class=MFile><a href="Geometry/Curve-js.html">Curve</a></div></div><div class=MEntry><div class=MFile><a href="Geometry/LinearRing-js.html">LinearRing</a></div></div><div class=MEntry><div class=MFile><a href="Geometry/LineString-js.html">LineString</a></div></div><div class=MEntry><div class=MFile><a 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class=MFile><a href="Layer/EventPane-js.html">EventPane</a></div></div><div class=MEntry><div class=MFile><a href="Layer/FixedZoomLevels-js.html">FixedZoomLevels</a></div></div><div class=MEntry><div class=MFile><a href="Layer/GeoRSS-js.html">GeoRSS</a></div></div><div class=MEntry><div class=MFile><a href="Layer/GML-js.html">GML</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Google-js.html">Google</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Grid-js.html">Grid</a></div></div><div class=MEntry><div class=MFile><a href="Layer/HTTPRequest-js.html">HTTPRequest</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Image-js.html">Image</a></div></div><div class=MEntry><div class=MFile><a href="Layer/KaMap-js.html">KaMap</a></div></div><div class=MEntry><div class=MFile><a href="Layer/KaMapCache-js.html">KaMapCache</a></div></div><div class=MEntry><div class=MFile><a href="Layer/MapGuide-js.html">MapGuide</a></div></div><div class=MEntry><div class=MFile><a href="Layer/MapServer-js.html">MapServer</a></div></div><div class=MEntry><div class=MFile><a href="Layer/MapServer/Untiled-js.html">MapServer.<wbr>Untiled</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Markers-js.html">Markers</a></div></div><div class=MEntry><div class=MFile><a href="Layer/MultiMap-js.html">MultiMap</a></div></div><div class=MEntry><div class=MFile><a href="Layer/PointTrack-js.html">PointTrack</a></div></div><div class=MEntry><div class=MFile><a href="Layer/SphericalMercator-js.html">SphericalMercator</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Text-js.html">Text</a></div></div><div class=MEntry><div class=MFile><a href="Layer/TileCache-js.html">TileCache</a></div></div><div class=MEntry><div class=MFile><a href="Layer/TMS-js.html">TMS</a></div></div><div class=MEntry><div class=MFile><a href="Layer/Vector-js.html">Vector</a></div></div><div class=MEntry><div class=MFile><a 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134 <div class=CToolTip id="tt1"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getElement = function()</td></tr></table></blockquote>This is the old $() from prototype</div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.extend = function(</td><td class=PParameter nowrap>destination,</td></tr><tr><td></td><td class=PParameter nowrap>source</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Copy all properties of a source object to a destination object. </div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.removeItem = function(</td><td class=PParameter nowrap>array,</td></tr><tr><td></td><td class=PParameter nowrap>item</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Remove an object from an array. </div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.clearArray = function(</td><td class=PParameter nowrap>array</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><b>Deprecated</b>. </div></div><div class=CToolTip id="tt5"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.indexOf = function(</td><td class=PParameter nowrap>array,</td></tr><tr><td></td><td class=PParameter nowrap>obj</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Seems to exist already in FF, but not in MOZ.</div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.modifyDOMElement = function(</td><td class=PParameter nowrap>element,</td></tr><tr><td></td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>overflow,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Modifies many properties of a DOM element all at once. </div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createDiv = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>overflow,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Creates a new div and optionally set some standard attributes. </div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createImage = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>opacity,</td></tr><tr><td></td><td class=PParameter nowrap>delayDisplay</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Creates an img element with specific attribute values.</div></div><div class=CToolTip id="tt9"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.setOpacity = function(</td><td class=PParameter nowrap>element,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><b>Deprecated</b>. </div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.onImageLoad = function()</td></tr></table></blockquote>Bound to image load events. </div></div><div class=CToolTip id="tt11"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.onImageLoadError = function()</td></tr></table></blockquote></div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.alphaHack = function()</td></tr></table></blockquote>Checks whether it’s necessary (and possible) to use the png alpha hack which allows alpha transparency for png images under Internet Explorer.</div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.modifyAlphaImageDiv = function(</td><td class=PParameter nowrap>div,</td></tr><tr><td></td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>sizing,</td></tr><tr><td></td><td class=PParameter nowrap>opacity</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt14"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createAlphaImageDiv = function(</td><td class=PParameter nowrap>id,</td></tr><tr><td></td><td class=PParameter nowrap>px,</td></tr><tr><td></td><td class=PParameter nowrap>sz,</td></tr><tr><td></td><td class=PParameter nowrap>imgURL,</td></tr><tr><td></td><td class=PParameter nowrap>position,</td></tr><tr><td></td><td class=PParameter nowrap>border,</td></tr><tr><td></td><td class=PParameter nowrap>sizing,</td></tr><tr><td></td><td class=PParameter nowrap>opacity,</td></tr><tr><td></td><td class=PParameter nowrap>delayDisplay</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt15"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.upperCaseObject = function (</td><td class=PParameter nowrap>object</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Creates a new hashtable and copies over all the keys from the passed-in object, but storing them under an uppercased version of the key at which they were stored.</div></div><div class=CToolTip id="tt16"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.applyDefaults = function (</td><td class=PParameter nowrap>to,</td></tr><tr><td></td><td class=PParameter nowrap>from</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Takes an object and copies any properties that don’t exist from another properties, by analogy with OpenLayers.Util.extend() from Prototype.js.</div></div><div class=CToolTip id="tt17"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getParameterString = function(</td><td class=PParameter nowrap>params</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt18"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getImagesLocation = function()</td></tr></table></blockquote>{String} The fully formatted image location string</div></div><div class=CToolTip id="tt19"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.Try = function()</td></tr></table></blockquote>Execute functions until one of them doesn’t throw an error. </div></div><div class=CToolTip id="tt20"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getNodes=function(</td><td class=PParameter nowrap>p,</td></tr><tr><td></td><td class=PParameter nowrap>tagName</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>These could/should be made namespace aware?</div></div><div class=CToolTip id="tt21"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util._getNodes=function(</td><td class=PParameter nowrap>nodes,</td></tr><tr><td></td><td class=PParameter nowrap>tagName</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt22"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getTagText = function (</td><td class=PParameter nowrap>parent,</td></tr><tr><td></td><td class=PParameter nowrap>item,</td></tr><tr><td></td><td class=PParameter nowrap>index</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt23"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getXmlNodeValue = function(</td><td class=PParameter nowrap>node</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt24"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.mouseLeft = function (</td><td class=PParameter nowrap>evt,</td></tr><tr><td></td><td class=PParameter nowrap>div</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt25"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.toFloat = function (</td><td class=PParameter nowrap>number,</td></tr><tr><td></td><td class=PParameter nowrap>precision</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Convenience method to cast an object to a Number, rounded to the desired floating point precision.</div></div><div class=CToolTip id="tt26"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.rad = function(</td><td class=PParameter nowrap>x</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt27"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.distVincenty=function(</td><td class=PParameter nowrap>p1,</td></tr><tr><td></td><td class=PParameter nowrap>p2</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Given two objects representing points with geographic coordinates, this calculates the distance between those points on the surface of an ellipsoid.</div></div><div class=CToolTip id="tt28"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getParameters = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Parse the parameters from a URL or from the current page itself into a JavaScript Object. </div></div><div class=CToolTip id="tt29"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getArgs = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><b>Deprecated</b>. </div></div><div class=CToolTip id="tt30"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createUniqueID = function(</td><td class=PParameter nowrap>prefix</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Create a unique identifier for this session. </div></div><div class=CToolTip id="tt31"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.normalizeScale = function (</td><td class=PParameter nowrap>scale</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt32"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getResolutionFromScale = function (</td><td class=PParameter nowrap>scale,</td></tr><tr><td></td><td class=PParameter nowrap>units</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt33"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getScaleFromResolution = function (</td><td class=PParameter nowrap>resolution,</td></tr><tr><td></td><td class=PParameter nowrap>units</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt34"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.safeStopPropagation = function(</td><td class=PParameter nowrap>evt</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><b>Deprecated</b>. </div></div><div class=CToolTip id="tt35"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.isEquivalentUrl = function(</td><td class=PParameter nowrap>url1,</td></tr><tr><td></td><td class=PParameter nowrap>url2,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Test two URLs for equivalence.</div></div><div class=CToolTip id="tt36"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.createUrlObject = function(</td><td class=PParameter nowrap>url,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt37"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.removeTail = function(</td><td class=PParameter nowrap>url</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Takes a url and removes everything after the ? </div></div><div class=CToolTip id="tt38"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getBrowserName = function()</td></tr></table></blockquote>{String} A string which specifies which is the current browser in which we are running.</div></div><div class=CToolTip id="tt39"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>OpenLayers.Util.getRenderedDimensions = function(</td><td class=PParameter nowrap>contentHTML,</td></tr><tr><td></td><td class=PParameter nowrap>size,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Renders the contentHTML offscreen to determine actual dimensions for popup sizing. </div></div><div class=CToolTip id="tt40"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>OpenLayers.Util.getScrollbarWidth = function()</td></tr></table></blockquote>This function has been modified by the OpenLayers from the original version, written by Matthew Eernisse and released under the Apache 2 license here:</div></div><div class=CToolTip id="tt41"><div class=CClass>This class represents a screen coordinate, in x and y coordinates</div></div><div class=CToolTip id="tt42"><div class=CClass>Instances of this class represent a width/height pair</div></div><div class=CToolTip id="tt43"><div class=CClass>This class represents a longitude and latitude pair</div></div><div class=CToolTip id="tt44"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>stop: function(</td><td class=PParameter nowrap>event,</td></tr><tr><td></td><td class=PParameter nowrap>allowDefault</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Stops an event from propagating.</div></div><!--END_ND_TOOLTIPS-->
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