window.onload=initRollover;
var navItems=new Array("navhome","navcourses","navproctor","navcontact");

function initRollover() {
	for(var i=0;i<navItems.length;i++) {
		var currImage=document.getElementById(navItems[i]);
		setupRollover(currImage);
	}
}

function setupRollover(thisImage) {
	thisImage.outImage=new Image();
	thisImage.outImage.src=thisImage.src;
	thisImage.onmouseout=function() {
		this.src=this.outImage.src;
	}
	
	thisImage.overImage=new Image();
	thisImage.overImage.src="../images/"+thisImage.id+"-on.png";
	thisImage.onmouseover=function() {
		this.src=this.overImage.src;
	}
}

function toggleMenu(toggle) {
	if (toggle==1) {
		document.getElementById("subnav").className="lvl2on";
	}
	if (toggle==0) {
		document.getElementById("subnav").className="lvl2off";
	}
}

function toggleColor(toggle) {
	if (toggle==0) {
		document.getElementById("navconted").src="../images/navconted.png";
	}
	if (toggle==1) {
		document.getElementById("navconted").src="../images/navconted-on.png";
	}
}