function opend(url,width,heigth) {
myWindow = open (url,'DEMO','dependent=yes,resizable=yes,scrollbars=yes,width='+width+',height='+heigth+',hotkeys=no,location=no,menubar=no,,status=no,toolbar=no')
myWindow.focus()
}

var d=document;

//menu1
sfHover = function()
{
  var sfEls = d.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);