// preload images
if (document.images) 
	{
	var pic1 = new Image();
	pic1.src = "images/arrow_subNav.gif";
	
	var pic2 = new Image();
	pic2.src = "images/arrow_subNav_on.gif";
	
	var pic3 = new Image();
	pic3.src = "images/arrow_contact.gif";
	
	var pic4 = new Image();
	pic4.src = "images/arrow_contactOver.gif";
	
	var pic5 = new Image();
	pic5.src = "images/arrow_about.gif";
	
	var pic6 = new Image();
	pic6.src = "images/arrow_about_on.gif";
	}
	
// set nav on states
function setNav(id,navStyle) {
	var bVersion = parseInt(navigator.appVersion);
	var bName = navigator.appName;
	var myObj = document.getElementById(id);
	if(!myObj) return;
	
	if ((bName.indexOf('Netscape')>-1 &&  bVersion  >4) ||(bName.indexOf('Explorer')>-1 && bVersion >=4)){
		myObj.className=navStyle;
	}
}

function eval_location(){ 
	if (typeof(tkeys) != 'undefined'&& tkeys.length>1) { setNav('location',tkeys,'','navOn'); 
	} 
}

// define sections 
var tkeys = new Array('aboutOn','admissionsOn','academicsOn','centersOn','alumniOn');