ajax 的问题。

function send_Pricerequest(url,obj)
  {
http_Pricerequest = false;

if(window.XMLHttpRequest)
{
http_Pricerequest = new XMLHttpRequest();
if (http_Pricerequest.overrideMimeType)
{
http_Pricerequest.overrideMimeType("text/xml");
}
}
else if (window.ActiveXObject)
{
try
{
http_Pricerequest = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{
try
{
http_Pricerequest = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{}
}
}
if (!http_Pricerequest)
{
return false;
}
http_Pricerequest.onreadystatechange = obj;

http_Pricerequest.open("GET", url, true);
http_Pricerequest.send(null);
}
 
function ShowResult()
{
   
var rText="";
if (http_Pricerequest.readyState == 4)
{


if (http_Pricerequest.status == 200)
{
rText=http_Pricerequest.responseText.replace(/^\s*/,"");

if (rText=="")
{
  rText=" <div class='w'>Error </div>";
}

document.getElementById("ShowDiv")