// ajax
function getXMLRequester( )
{
    var xmlhttp_request = false;
    try	{
        if( window.ActiveXObject ){
            for( var i = 5; i; i-- ){
                try{
                    if( i == 2 ){
				xmlhttp_request = 
					new ActiveXObject( "Microsoft.XMLHTTP" );    
                    }else{
				xmlhttp_request = 
					new ActiveXObject("Msxml2.XMLHTTP." + i + ".0" );    
				xmlhttp_request.setRequestHeader("Content-Type","text/xml");
				xmlhttp_request.setRequestHeader("Content-Type","gb2312");
                 }
				break;
				}catch(e){                        
                    xmlhttp_request = false;
                }
            }
        }else if( window.XMLHttpRequest ){
            xmlhttp_request =			
				new XMLHttpRequest();
            if (xmlhttp_request.overrideMimeType){
                xmlhttp_request.overrideMimeType('text/xml');
            }
        }
    }catch(e){
        xmlhttp_request = false;
    }
    
    return xmlhttp_request ;
}

 //????????????
 function sRequest(url,v1,v2,v3)	{	 
	
	url1=url+document.getElementById(v1).value;
	url1 =url1+"&sort="+v3
	//alert(url1);
    xmlhttp_request=getXMLRequester();
    xmlhttp_request.onreadystatechange = dosort;
    xmlhttp_request.open('GET', url1, true);
    xmlhttp_request.send(null);
    }
    
 function dosort() {
     if (xmlhttp_request.readyState == 4) {
       if (xmlhttp_request.status == 200) {
			document.getElementById("sort2_message").innerHTML = 
			xmlhttp_request.responseText;
           }else {
                alert("?????????????????????????????????????????????IE5.0");
                 }
          }
    }