function menuactiv() {mylist=document.getElementById('bigmenu'); walkTree(mylist);}
 function walkTree(node) {
    if (node == null) return;
    for (var i = 0; i < node.childNodes.length; i++) {
        TempNode=node.childNodes[i];
        if(TempNode.tagName=='LI') TempNode.className='rc';
        if(TempNode.tagName=='UL') {
         if(TempNode.id=='bmu') ti=' id=bmd'; else ti='';
         TempNode.innerHTML='<div class=m1_0'+ti+'><div class=m1_1></div><div class=m1_2><div></div></div><div class=m1_3></div></div><div class=m2_0><div class=m2_1>'+TempNode.innerHTML+'</div></div><div class=m3_0><div class=m3_1></div><div class=m3_2><div></div></div><div class=m3_3></div></div>';
        }
        if (TempNode.addEventListener) {
            TempNode.addEventListener('mouseover', clicklist, false); TempNode.addEventListener('mouseout', clicklist, false);
          } else if (TempNode.attachEvent) {
            TempNode.attachEvent('onmouseover', clicklist); TempNode.attachEvent('onmouseout', clicklist);
        }
        walkTree(TempNode);
    }
 }
 function clicklist(e) {
  var e = e || window.event; 
  var mycuritem = e.target || e.srcElement;
   t='';
   if(e.type=='mouseover') t='ra'; if(e.type=='mouseout') t='rc';
   while(mycuritem.id!='bigmenu') {
   if(mycuritem.tagName=='LI') mycuritem.className=t; mycuritem=mycuritem.parentNode;
   }
 }