var rollOverImages = new Array("research","publications","news","field","responses","faqs","about","h_research","h_publications","h_news","h_field","h_responses","h_faqs","h_about");
	

function rollOver(e)
	{
	try
		{
		event.srcElement.src = "images/rollover/nav_"+event.srcElement.id+".gif";
		}
	catch(err){}
	
	try
		{
		e.target.setAttribute("src","images/rollover/nav_"+event.target.id+".gif");
		}
	catch(err)
		{}
	}

function rollOut(e)
	{
	try
		{
		event.srcElement.src = "images/nav_"+event.srcElement.id+".gif";
		}
	catch(err){}
	
	try
		{
		e.target.setAttribute("src","images/nav_"+event.target.id+".gif");

		}
	catch(err)
		{}
	}

// try to implement rollovers
function setupRollOvers()
	{
	
	for (var i = 0; i < rollOverImages.length; i++)
		{
		var obj = document.getElementById(rollOverImages[i]);
			try{
			obj.onmouseover = rollOver;
			obj.onmouseout = rollOut;
			
			}
			catch(err){}
		}
		
	
	}
	


	if(document.layers == null)
		{
		window.onload = setupRollOvers;
		document.write('<link rel="stylesheet" type="text/css" href="site.css" />');
		}
	else
		{
		document.write("<style>td {vertical-align:top}</style>");
		}