var http_xmlrequest = false;
var http_response; // 结果显示ID
var http_request;  // 文本框ID　
function sendHttpXMLRequest(url,response,request){
		http_response=response;
		http_request=request;
		if (window.ActiveXObject)
		{
			try
			{
					http_xmlrequest= new ActiveXObject('Msxml2.XMLHTTP');
			}
			catch(e)
			{
				try
				{
					 http_xmlrequest = new ActiveXObject('Microsoft.XMLHTTP');
				}
				catch(e)
				{
					 http_xmlrequest = null;
				}
			}
		}

		else if (window.XMLHttpRequest)
		{
		 	http_xmlrequest = new XMLHttpRequest();
		 	 if(http_xmlrequest.overrideMimeType){ 
            		http_xmlrequest.overrideMimeType("text/xml"); 
       		 }
		}
		if(!http_xmlrequest)
		{
			alert("cannot establish xmlHttpRequest object!");
		}
		
		requesturl=url+http_request;
		http_xmlrequest.onreadystatechange=process_Request;
		http_xmlrequest.open("post",requesturl,true);
		http_xmlrequest.send(null);
}

function process_Request(){
	if(http_xmlrequest.readyState == 4) { 	
        if(http_xmlrequest.status == 200) {
			document.getElementById(http_response).innerHTML = unescape(http_xmlrequest.responseText);
		}
	}	
}