// JavaScript Document
startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" over";
				}
				node.onmouseout=function() {
					this.className=this.className.replace(" over", "");
				}
			}
		}
	}
}
window.onload=startList;
function findObj(theObj, theDoc)
{
  var p, i, foundObj;
  
  if(!theDoc) theDoc = document;
  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
  {
    theDoc = parent.frames[theObj.substring(p+1)].document;
    theObj = theObj.substring(0,p);
  }
  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
  for (i=0; !foundObj && i < theDoc.forms.length; i++) 
    foundObj = theDoc.forms[i][theObj];
  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++) 
    foundObj = findObj(theObj,theDoc.layers[i].document);
  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);
  
  return foundObj;
}
var on = "";
function show( layer) {
	mylayer = findObj(layer);
	if (mylayer!= null) {
		mylayer.style.display = "block";
	}
	if(on!= '') {
		on.style.display = "none";
	}
	on = mylayer;
}
function hide( layer) {
	mylayer = findObj(layer);
	if (mylayer!= null) {
		mylayer.style.display = "none";
	} 
	on = "";
	 
}
function showmap() {
	mylayer = findObj('alphatransp');
	if (mylayer!= null) {
		mylayer.style.display = "block";
	}
}
function hidemap() {
	mylayer = findObj('alphatransp');
	if (mylayer!= null) {
		mylayer.style.display = "none";
	}

}