var elements = new Array("ns", "nb", "nf", "pei");

	function toggleElement(element)
	{
		var curElem; 
		for(var i = 0; i < elements.length; i++)
		{
			curElem = document.getElementById(elements[i]);
			parentElem = curElem.id + "parent";
			if(curElem.id == element)
			{	
				if(curElem.style.display == "none")
				{
					 curElem.style.display = "block";
					 document.getElementById(parentElem).className = "topItemSelected";
				}
				else
				{
					curElem.style.display = "none";
					 document.getElementById(parentElem).className = "topItem";
				}
			}
			else
			{
				curElem.style.display = "none";
				document.getElementById(parentElem).className = "topItem";
			}
		}			
	}
	
	function showMap(url)
	{
		var offset = 0;
		if(window.pageYOffset)
		{
	       offset = window.pageYOffset;
		}	
		else if(document.documentElement.scrollTop)
		{
		   offset = document.documentElement.scrollTop;
		}
		
		document.getElementById("mapFrame").src = url;
		document.getElementById("frameContainer").style.left =  "300px";
		document.getElementById("frameContainer").style.top = offset + 100 + "px";
		document.getElementById("frameContainer").style.display = "block";
	   
    }
	
	function closeMap()
	{
		document.getElementById("frameContainer").style.display = "none";
	}