var oldId="a"

function openWin(fileName)
{
	window.open(fileName,"TitleListing","scrollbars=yes,menubar=1,resizable=1,width=400,height=475"); 
}
function display(itemId)
{
	if(oldId!=itemId)
	{
		document.getElementById(oldId).style.display="none";
		document.getElementById(itemId).style.display="block";
		oldId = itemId;
	}
}