} else if (aPos.hasOwnProperty('minlon') && aPos.hasOwnProperty('minlat')
&& aPos.hasOwnProperty('maxlon') && aPos.hasOwnProperty('maxlat')) {
extent = new OpenLayers.Bounds(aPos.minlon, aPos.minlat, aPos.maxlon, aPos.maxlat)
} else if (aPos.hasOwnProperty('minlon') && aPos.hasOwnProperty('minlat')
&& aPos.hasOwnProperty('maxlon') && aPos.hasOwnProperty('maxlat')) {
extent = new OpenLayers.Bounds(aPos.minlon, aPos.minlat, aPos.maxlon, aPos.maxlat)