beginList = function(){
	if (document.all&&document.getElementById){
		var theNav = document.getElementById("nav");
		var theListItems = theNav.getElementsByTagName("li");
		//alert(theListItems.length);
		for (i=0; i<theListItems.length; i++){
			var theLI = theListItems[i];
			theLI.onmouseover=function(){
				this.className+=" over";
				//alert(this.className);
			}
			theLI.onmouseout=function(){
				this.className=this.className.replace(" over", "");
				//alert(this.className);
			}
		}
	}
}
window.onload=beginList;