window.onload=function(){
	addWhateverHover("mainmenu","li","over");
}
function addWhateverHover(where,whichElement,whatClass,onlyThisClass){
	if(document.all&&document.getElementById){
		var genContainer=document.getElementById(where);
		var genElements=genContainer.getElementsByTagName(whichElement);
		var l=genElements.length;
		for (i=0;i<l;i++){
			if ((genElements[i].className.indexOf(onlyThisClass)!=-1)||(!onlyThisClass)) {
				genElements[i].onmouseover=function(){this.className+=" "+whatClass;}
				genElements[i].onmouseout=function(){this.className=this.className.replace(" "+whatClass,"");}
			}
		}
	}
}