startList = function() {
              if (document.all&&document.getElementById) {
               navRoot = document.getElementById("nav");
               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", "");
                 }
               }
               }
              }
             }
             
           window.onload=startList;