var http_request = false; 
function send_request(url) 
{
	//初始化、指定处理函数、发送请求的函数
	var vNow = new Date(); 
    var vNum=vNow.getYear()+vNow.getMonth()+vNow.getDay()+vNow.getHours()+vNow.getMinutes()+vNow.getTime()
    url=url+"&num="+vNum;
    //alert(webFile);
    
	http_request = false;
	//开始初始化XMLHttpRequest对象
	if(window.XMLHttpRequest)
	{ //Mozilla 浏览器
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
		{//设置MiME类别
			http_request.overrideMimeType('text/xml');
		}
	}
	else if (window.ActiveXObject) 
	{ // IE浏览器
		try 
		{
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) 
		{
			try 
			{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) 
			{
			}
		}
	}
	if (!http_request)
	{ // 异常，创建对象实例失败
		window.alert("不能创建XMLHttpRequest对象实例.");
		return false;
	}
	http_request.onreadystatechange = processRequest;
	// 确定发送请求的方式和URL以及是否同步执行下段代码
	http_request.open("GET", url, true);
	http_request.send(null);
}
// 处理返回信息的函数
function processRequest() 
{
	// 判断对象状态
	// readyState: 对象状态(integer):0 = 未初始化,1 = 读取中,2 = 已读取,3 = 交互中,4 = 完成
	if (http_request.readyState == 4) 
	{ 			
		// 信息已经成功返回，开始处理信息
		//status : 服务器返回的状态码, 如：404 = "文件末找到" 、200 ="成功"
		if (http_request.status == 200) 
		{ 
			//alert(http_request.responseText);	
			return	http_request.responseText;	
		}
		else 
		{ //页面不正常
			alert("您所请求的页面有异常。");
		}
	}
}

function UnLoad_UserExit()
{
    var vUserId=document.getElementById("input_userId").value;
    var vLoginGuid=document.getElementById("input_loginGuid").value;
    var url="partsAdmin/getcar.aspx?userId=" + vUserId+"&loginGuid="+vLoginGuid+"&type=logExit";
    //alert(url);
    var result=send_request(url);    
}