function navControl(){
	if (document.all&&document.getElementById) {
		var navElem = document.getElementById("mainnav");
		var len =navElem.childNodes.length
		for(o=0; o<len; o++){
			var subNode = navElem.childNodes[o];
			// MAIN
			if(subNode.nodeName=="LI"){
				subNode.o = o
				subNode.CName = subNode.className
				subNode.onmouseover=function(){
					this.className=this.CName+" over";
					var slen = this.childNodes[2].childNodes.length;
					for(a=0; a<slen; a++){
						var subSubNode = this.childNodes[2].childNodes[a]
						subSubNode.onmouseover=function(){
							this.className="over";
						}
						subSubNode.onmouseout=function(){
							this.className="";
						}
					}
				}
				subNode.onmouseout=function(){
					this.className=this.CName;	
				}
			}
			// SUB
			
		}
	}
}

window.onload = navControl;