function setBgNav(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "nav_bg_over";
	}
	
function setBgList(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "selected";
	}
	
function setSecondaryList(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "active";
	}
	
function setTopNav(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "over";
	}
	
function setGlossaryNav(elm)	{
		var obj = document.getElementById(elm);
		obj.className = "glossary_selected";
	}