function highlite_tab(selection){
	if(selection != null){
		document.getElementById("opt"+selection).className="over";
	}
}

function overLinks(lyr)
{
	for (i = 1; i < 7; i++)
	{
		document.getElementById("opt"+[i]).className="none";
		document.getElementById("tab"+[i]).style.display="none";
	}
	document.getElementById("opt"+lyr).className="over";
	document.getElementById("tab"+lyr).style.display="block";
}
function overLinks2(lyr)
{
	for (i = 1; i < 6; i++)
	{
		document.getElementById("opt"+[i]).className="none";
		document.getElementById("tab"+[i]).style.display="none";
	}
	document.getElementById("opt"+lyr).className="over";
	document.getElementById("tab"+lyr).style.display="block";
}