// JavaScript Document
 function replaceEle(){  
     if(document.getElementById){  
         var obj = document.getElementById("menu");  
         obj.innerHTML = obj.innerHTML.replace(/<dt>/gi, '<dt onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');  
         obj.innerHTML = obj.innerHTML.replace(/<li>/gi, '<li onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');  
     }  
  }  
       
 function popupMenu( obj ){  
     var menu = obj.getElementsByTagName("ul").item(0);  
     if(menu){  
         menu.style.display = "block";  
     }  
       
     if(obj.tagName.match(/li/i)){  
         obj.style.backgroundColor = "#22f";  
     }  
 }  
       
 function hiddenMenu( obj ){  
     var menu = obj.getElementsByTagName("ul").item(0);  
     if(menu){  
         menu.style.display = "none";  
     }  
       
     if(obj.tagName.match(/li/i)){  
         obj.style.backgroundColor = "#77f";  
     }  
 }