function t()
{
   var http_request = false;
   if(window.XMLHttpRequest) 
   {
   http_request = new XMLHttpRequest();
       if (http_request.overrideMimeType)
       {
       http_request.overrideMimeType("text/xml");
       }
   }
   else if (window.ActiveXObject)
   {
       try {
       http_request = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (e) {
       try {
       http_request = new ActiveXObject("Microsoft.XMLHTTP");
       } catch (e) {}
       }
   }
   if (!http_request) {
   window.alert("ä¯ÀÀÆ÷²»Ö§³ÖAjax | Çë¸ü»»ä¯ÀÀÆ÷");
   return false;
   }
   http_request.onreadystatechange =function(){
       if (http_request.readyState == 4)
       {
           if (http_request.status == 200)
               {
                   document.getElementById("menu").innerHTML=http_request.responseText;
               }
       }
   }
   http_request.open("post","/menu.asp",true);
   http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
   http_request.send(null);
}