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() {
//clearTimeout(this.waiting); 
this.className+=" over";

  }

node.onmouseout=function() {
var that = this;

this.waiting = setTimeout(function() {
  that.className=that.className.replace
        (" over", "");
that = null;  },300);
   }
   }
}
}
}
window.onload=startList;