function initWindow() {
   if (document.all&&document.getElementById) {
      navRoot = document.getElementById("navi");
      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=initWindow;