stuHover = function() {
 var cssRule;
 var newSelector;
 for (var i=0; i<document.styleSheets.length; i++)
  for (var x=0; x<document.styleSheets[i].rules.length ; x++)
   {
   cssRule = document.styleSheets[i].rules[x];
   if (cssRule.selectorText.indexOf("LI:hover") >= 0)
   {
     newSelector = cssRule.selectorText.replace(/LI:hover/gi, "LI.iehover");
    document.styleSheets[i].addRule(newSelector , cssRule.style.cssText);
   }
  }
 var getElm = document.getElementById("nav").getElementsByTagName("LI");
 for (var i=0; i<getElm.length; i++) {
  getElm[i].onmouseover=function() {
   this.className+=" iehover";
  }
  getElm[i].onmouseout=function() {
   this.className=this.className.replace(new RegExp(" iehover\\b"), "");
  }
 }
}
if (window.attachEvent) window.attachEvent("onload", stuHover);