// This function assigns a style to the menu items in order to 
// fix the drop-down lists for IE6, which don't support "li:hover"
sfHover = function() {
  if (document.getElementById("nav") != null){
    var sfEls = document.getElementById("nav").getElementsByTagName("LI");
    for (var i=0; i < sfEls.length; i++) {
      sfEls[i].onmouseover=function() {
        this.className+=" sfhover";
      }
      sfEls[i].onmouseout=function() {
        this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
      }
    }
  }
}
if (window.attachEvent) window.attachEvent("onload", sfHover);