var spinner = "<img src='/images/spinner.gif' alt='ÕýÔÚ¼ÓÔØ' />"; 

///
/// Return a XMLHTTPRequest in a browser independent fashion.
///
function GetXMLHttp()
{
    var xmlhttp=false;
    
    try 
    {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } 
    catch (e) 
    {
        try 
      {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (E)
       {
            xmlhttp = false;
        }
    } 

    // Mozilla then?
    if (!xmlhttp && typeof XMLHttpRequest!='undefined')
	{
       xmlhttp = new XMLHttpRequest();
    }
    
    return xmlhttp;
}