function dropdowns(divname) {
    if (document.all && document.getElementById) {
       navRoot = document.getElementById(divname);
       listRoot = navRoot.childNodes[0];
       for (i=0; i<listRoot.childNodes.length; i++) {
          node = listRoot.childNodes[i];
          if (node.nodeName=="LI") {
             node.onmouseover=function() {
				currentname = this.className;
                this.className=currentname+"_over";
             }
             node.onmouseout=function() {
                this.className=this.className.replace("_over","");
             }
          }
       }
    }
}