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

navRoot = document.getElementById("sidenav");

for (j=0; j<navRoot.childNodes.length; j++)
{
  if (navRoot.childNodes[j].nodeName=="UL")
  {
    navRoot = navRoot.childNodes[j];
    break;
  }
}

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;