// JavaScript Document 
var xmlhttp=null;  
function createxmlhttp(){ 
 try {  
 xmlhttp=new ActiveXObject("Msxml2.xmlhttp") ; 
 }  
 catch(e) {  
 try {  
 xmlhttp=new ActiveXObject("Microsoft.xmlhttp") ; 
 }  
    catch(oc) {  
 xmlhttp=null ; 
 }  
 }  
 if ( !xmlhttp && typeof XMLHttpRequest != "undefined" ) {  
 xmlhttp = new XMLHttpRequest(); 
 }   
 if (!xmlhttp) { 
   //alert("您的浏览器不支AJAX!"); 
 } 
} 
function ajaxPost(url,reid){  
 createxmlhttp(); 
  //getMode 
  xmlhttp.open("get",url+"&n="+Math.random(),true); 
  xmlhttp.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded"); 
  xmlhttp.onreadystatechange= function () { checkState(reid); } ;  
  xmlhttp.send(null); 
}  

function  checkState(reid){ 
if (xmlhttp.readyState == 4){ 
  document.getElementById(reid).innerHTML="<img src=/images/waiting.gif><font size='4'>正在加载信息...</font><br>"; 
  if(xmlhttp.status == 200){ 
   var retext = xmlhttp.responseText; 
   document.getElementById(reid).innerHTML=retext; 
   } 
 } 
 else{ 
  document.getElementById(reid).innerHTML="<img src=/images/waiting.gif><font size='4'>正在加载信息...</font><br>"; 
 } 
}