function preloadImages(){
		// NAVBAR
		//arrows
		return;
		var imgNav = new Image()
		imgNav.src="/skydust/images/arrow.gif"
		var imgNavOver = new Image()
		imgNavOver.src = "/skydust/images/arrow_expanded.gif"
		
		//Top item backgrounds
		var imgNavBg = new Image()
		imgNavBg.src = "/skydust/images/item_bg.gif"
		var imgNavBgHover = new Image()
		imgNavBgHover.src = "/skydust/images/item_hover_bg.gif"
		
		//Child nav item background. Hold in memory
		var imgNavChild="/skydust/images/group_bg.gif"			
	}
	
	function toggleTable(tbl,ig){
		tbl1 = document.getElementById(tbl)
		image1=document.getElementById(ig)
		if(tbl1.style.display==""){
			tbl1.style.display="none";
			image1.src=imgNav.src;	
		}
		else{
			tbl1.style.display="";
			image1.src=imgNavOver.src;
		}
	}
	
	function doStatus(idx){
		switch(idx){
			case 0:window.status="Work with an Advisor";event.returnValue=true;break;
			case 1:window.status="Learn About NADP";event.returnValue=true;break;
			case 2:window.status="View NADP Participants";event.returnValue=true;break;
			case 3:window.status="NADP Details";event.returnValue=true;break;
			case 4:window.status="NADP: A Teacher's Story";event.returnValue=true;break;
			case 5:window.status="Partners";event.returnValue=true;break;
			case 6:window.status="View NADP Resources";event.returnValue=true;break;
			case 7:window.status="Work with your Advisor";event.returnValue=true;break;
			case 8:window.status="How to Collect Sky Dust";event.returnValue=true;break;
			case 9:window.status="How to Remove Sky Dust";event.returnValue=true;break;
			case 10:window.status="How To Prepare Slides for Observation";event.returnValue=true;break;
			case 11:window.status="How To Learn about our Image Catalog";event.returnValue=true;break;
			case 12:window.status="How To Ship Examples";event.returnValue=true;break;
			case 13:window.status="View GIS Data";event.returnValue=true;break;
			case 14:window.status="Links to Related Sites";event.returnValue=true;break;
			case 15:window.status="FAQ";event.returnValue=true;break;
			case 16:window.status="Contact Information";event.returnValue=true;break;
			case 17:window.status="Contact Us";event.returnValue=true;break;
			case 18:window.status="Register Institution";event.returnValue=true;break;
			case 19:window.status="Register Contact";event.returnValue=true;break;
			case 20:window.status="Login to Members Site";event.returnValue=true;break;
			//Member's menu below
			case 21:window.status="Main Menu";event.returnValue=true;break;
			case 22:window.status="Special Analysis";event.returnValue=true;break;
			case 23:window.status="NADP Forms";event.returnValue=true;break;
			case 24:window.status="Image Catalog";event.returnValue=true;break;
			case 25:window.status="View Image Catalog";event.returnValue=true;break;
			case 26:window.status="Data Exchange";event.returnValue=true;break;
			case 27:window.status="Reporting Data";event.returnValue=true;break;
			case 28:window.status="Collect with Others";event.returnValue=true;break;
			case 29:window.status="How to Submit Data";event.returnValue=true;break;
			case 30:window.status="Secure Email";event.returnValue=true;break;
			case 31:window.status="Send an email inquiry";event.returnValue=true;break;			
		}
	
	}
	
	function l2classOn(obj,idx){
		obj.style.className="Level2ItemHover";
		doStatus(idx);
	}
	
	function l2classOff(obj,idx){
		obj.style.className="Level2Item";
		window.status=""
	}
	
	function topLevelClassOn(obj,idx){
		obj.style.className="TopItemHover";
		doStatus(idx);
	}
	
	function topLevelClassOff(obj,idx){
		obj.style.className="TopItem";
		window.status="";
	}