newwin = function  (URL, NAME, breite, hoehe)
{
  xpos = (screen.availWidth - breite) / 2;
  ypos = (screen.availHeight - hoehe - 60);
  window.open (URL,NAME,"width="+breite+",height="+hoehe+",scrollbars=yes,toolbar=yes,menubar=no,left="+xpos+",top="+ypos+"");

}

sfHover = function() {
  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);