ns4 = (document.layers)? true:false

function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()');
		eval(imgObj+'.src = "'+imgSrc+'"');
	}
}

function changeImage(imgName,imgObj,layer) {
	if (document.images) {
		if (document.layers && layer!=null) eval('document.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src');
		else document.images[imgName].src = eval(imgObj+".src");
	}
}

function swapLocation(){
if (document.map.MapSelector.options[document.map.MapSelector.selectedIndex].value != "") {
	newWin = document.map.MapSelector.options[document.map.MapSelector.selectedIndex].value;
	window.open ('/programsa-z/huells/pop.php?ID='+ newWin,'map','width=416,height=474,toolbars=0,status=0,scrollbars=1,resize=0');
		}
}
				
function popExploreWindow(item) {
	newWin = item;
	window.open ('/programsa-z/huells/pop.php?ID='+ newWin,'map','width=416,height=474,toolbars=0,status=0,scrollbars=1,resize=0');
	return true;
}

function selectASite(){
	selectedSite = document.selectSite.siteID.options[document.selectSite.siteID.selectedIndex].value;
	if (selectedSite != "") {
		//alert(selectedSite);
		document.location.href = selectedSite;
	}
}