startList = function() {
  if (document.all && document.getElementById) {
    if (document.getElementById('subnav')) {
      navRoot = document.getElementById('subnav');
      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;