function initMenu()
{
	var _nav = document.getElementById("main-nav");
	if (_nav){
		var nodes = _nav.getElementsByTagName("li");
		for (var i=0; i<nodes.length; i++) {
			nodes[i].onmouseover = function(){
				if (this.className.indexOf('hover') == -1)
				this.className += " hover";
			}
			nodes[i].onmouseout = function(){
				this.className = this.className.replace(" hover", "");
			}
		}
	}
}
if (window.attachEvent){
	window.attachEvent("onload", initMenu);
}