//创建XMLHttpRequest对象       
    function createXMLHttpRequest2() {
    	var XMLHttpReq;
		if(window.XMLHttpRequest) { //Mozilla 浏览器
			XMLHttpReq = new XMLHttpRequest();
		}
		else if(window.ActiveXObject){
	    XMLHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
		}else if(window.ActiveXObject){
		    XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP.4.0");
		}else if(window.ActiveXObject){
		    XMLHttpReq = new ActiveXObject("Msxml2.XMLHTTP");
		}else if(window.XMLHttpRequest){
		   XMLHttpReq = new XMLHttpRequest();
		}
		return XMLHttpReq;
	}
  
  function check_review_login(){
 		var XMLHttpReq_Review=createXMLHttpRequest2();
		var url="forground/checkReviewLoginAjax.do";
		XMLHttpReq_Review.open("GET", url, true);
		XMLHttpReq_Review.onreadystatechange = function(){
			if (XMLHttpReq_Review.readyState == 4) { // 判断对象状态
	        	if (XMLHttpReq_Review.status == 200) { // 信息已经成功返回，开始处理信息
	            	var str= XMLHttpReq_Review.responseText;
	            	if(str==0){
	            		document.getElementById('searalogin').innerHTML="<a href=\"foreground/registerAction.do?link=stepOne\" target=\"_blank\"><img src=\"images/head/a_02.gif\" width=\"71\" height=\"19\"></a> ";
	        		}else{
	        			var user=XMLHttpReq_Review.responseXML.getElementsByTagName("user");
	        			var userName=user[0].getElementsByTagName("userName")[0].firstChild.data;
	        			if(document.getElementById('loginbox')){
		            		var image=user[0].getElementsByTagName("image")[0].firstChild.data;
		            		var	rank=user[0].getElementsByTagName("rank")[0].firstChild.data; 
		            		setlogin(userName,image,rank);    
	            		}else{
							document.getElementById('searalogin').innerHTML="<span style=\"font-size:14px; height:22px; line-height:22px\"><font color=\"blue\">"+userName+"&nbsp;&nbsp;你好！</font></span>";
	            		}
	            	}     
	            } else { //页面不正常
	               // window.alert("您所请求的页面有异常。");
	            }
	        }
		};//指定响应函数
		XMLHttpReq_Review.send(null);  // 发送请求
  }

  function login(url){
		var un=document.getElementById('un').value;
		var pw=document.getElementById('pw').value;
	  	if(un==""){
			alert("用户名不能为空！");
			document.getElementById('un').focus();
			return;
		}
		if(pw==""){
			alert("密码不能为空！");
			document.getElementById('pw').focus();
			return;
		}
		
		var statue=document.getElementById('statue').value;
		var u=url+"?userName="+un+"&password="+pw+"&statue="+statue;
		u=encodeURI(u);
    	u=encodeURI(u);
    	var XMLHttpReq=createXMLHttpRequest2();
		XMLHttpReq.open("GET", u, true);
		XMLHttpReq.onreadystatechange =function(){
			if (XMLHttpReq.readyState == 4) { // 判断对象状态
	        	if (XMLHttpReq.status == 200) { // 信息已经成功返回，开始处理信息
	            	var str=XMLHttpReq.responseText;
	            	//ajax的XML传输的解析。获取解析的数据    
	                var xml = XMLHttpReq.responseXML;
	            	if(str==1){
	            		//alert("用户名或密码不正确！请重新输入！");
	            		window.location.href="foreground/loginForwardAction.do?link=failure";
					}else if(str==2){
						//alert("帐号未激活！");
						window.location.href="foreground/loginForwardAction.do?link=error";
	            	}else if(str==3){
						//alert("帐号已关闭！");
						window.location.href="foreground/loginForwardAction.do?link=error";
	            	}else{
	            		var user = xml.getElementsByTagName("user");
	            		var userName;
	            		var image;
	            		var rank;
	            		for(var i = 0 ; i < user.length ; i++){
	            		 	userName=user[i].getElementsByTagName("userName")[0].firstChild.data;
	            		 	image=user[i].getElementsByTagName("image")[0].firstChild.data;
	            		 	rank=user[i].getElementsByTagName("rank")[0].firstChild.data; 
	            		 }             		 
	            		setlogin(userName,image,rank);        		
	            	}         
	            } else { //页面不正常
	                //window.alert("您所请求的页面有异常。");
	            }
	        }
		};//指定响应函数
		XMLHttpReq.send(null);  // 发送请求	
	}	

	function setlogin(userName,image,rank){
		var urladdr = rank==2 ? 'http://'+userName+'.goubuy.com' : 'foreground/companyUserInfo.do?userName='+userName;
		var text='<div class="blank9"></div>'+
             	 '<div class="box1Row3">'+
                 '<div class="left width70"><img src="'+image+'" width="73" height="73"></div>'+
                 '<div class="right width100" style="text-align:left">'+
                 '<div align="left">您好，<span class="fb cJh">'+userName+'</span></div>'+
                 '<div class="blank6"></div>'+
                 '<div><a href="'+urladdr+'" target="_blank">[ 查看我的商铺 ]</a></div>'+
                 '<div class="blank3"></div>'+
                 '<div><a href="foreground/loginAction.do" class="cJh">[ 进入会员中心 ]</a></div>'+
                 '<div class="blank3"></div>'+
                 '<div><a href="foreground/userlogoff.do">[ 安全退出 ]</a></div>'+
                 '</div></div>';
     	document.getElementById('loginbox').innerHTML=text;
     	document.getElementById('searalogin').innerHTML="<span style=\"font-size:14px; height:22px; line-height:22px\"><font color=\"blue\">"+userName+"你好！</font></span>";
	}