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);
}

browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
var msie4 = (browserName == "Microsoft Internet Explorer" && browserVer >= 4);
if ((browserName == "Netscape" && browserVer >= 3) || msie4 || browserName=="Konqueror" || browserName=="Opera") {
  version = "n3";
} 
else {
  version = "n2";
}

// Blurring links:
function blurLink(theObject) {
  if (msie4) {
    theObject.blur();
  }
}