var http_request = false;
var obj;
function send_request(url) {
	http_request = false;
	if(window.XMLHttpRequest) { //Mozilla 
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	}else if (window.ActiveXObject) { // IE
	  try {
		http_request = new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (e) {
		try {
			http_request = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {}
	 }
   }
   if (!http_request) { 
      document.getElementById(obj).innerHTML="";
      return false;
   }
	document.getElementById(obj).innerHTML="";
	http_request.onreadystatechange = processRequest;
	http_request.open("get", url, true);
	http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	http_request.send(null);
}
	
function processRequest() {
   if (http_request.readyState == 4) { 
     if (http_request.status == 200) { 
        //alert(http_request.responseText);
		document.getElementById(obj).innerHTML=http_request.responseText;
     } else { 
	   //document.getElementById(obj).innerHTML="载入信息错误";
       alert("载入信息错误。");
	   //close loading
   }
  }
}