startList = function() {
if (document.all&&document.getElementById) {

 for (j=1; j<8; j++) {
    navmenu = "nav" + j;

    navRoot = document.getElementById(navmenu);
    for (i=0; i<navRoot.childNodes.length; i++) {
       node = navRoot.childNodes[i];
       if (node.nodeName=="LI")
       {
         node.onmouseover=function() {
             this.className+=" over";
              }
         node.onmouseout=function() {
              this.className=this.className.replace(" over", "");
             }
      }
    }

 }//end for



 }//end if Browser IE

}//end function
window.onload=startList;