function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

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 += ' sfhover';
                }
                node.onmouseout = function() {
                    this.className = this.className.replace(" sfhover", "");
                }
            }
        }
    }
}

addLoadEvent(function() {
    startList();
});