var xmlHttp;
function Web_list(str)
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
var cate = form.elements['cate'].value;
var start = form.elements['start'].value;
var end = form.elements['end'].value;
var page = form.elements['page'].value;
var url="website_list.php";
url=url+"?cate="+cate;
url=url+"&start="+start;
url=url+"&end="+end;
url=url+"&page="+page;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("show_list").innerHTML=xmlHttp.responseText;
 document.getElementById('loading').style.display = "none";
 }
 else{
 document.getElementById('loading').style.display = "block";
 }
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}