function prepLIs() {
	if (!document.getElementById("nav")) { return false; }
	var nav = document.getElementById("nav");
	var allLIs = nav.getElementsByTagName("li");
	for (var x = 0; x < allLIs.length; x++) {
		var currLI = allLIs[x];
		currLI.onmouseover = new Function("mouseOverLI(this);");
		currLI.onmouseout = new Function("mouseOutLI();");
	}
}

function mouseOverLI(elem) {
	var nav = document.getElementById("nav");
	if (elem.className) {
		nav.className = elem.className;
	}
}

function mouseOutLI() {
	var nav = document.getElementById("nav");
	nav.className = "";
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if(typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
							oldonload();
							func();
						}
	}
}

addLoadEvent(prepLIs);