function GE(a){return document.getElementById(a);}	//通过ID值定位控件
///////////////////////////////////////
function creatCookie(mycookie,cookievalue){			//建立cookie
	var today = new Date();
	var expireDay = new Date();
	var msPerDay = 2*24*60*60*1000;
	expireDay.setTime( today.getTime() + msPerDay );
	document.cookie = mycookie+"="+escape(cookievalue)+";expires=" + expireDay.toGMTString()+"; path=/";
}
/////////////////////////////////////
function readcookie(name){								//读取cookies
var mycookie = document.cookie;
var start1 = mycookie.indexOf(name + "=");
if (start1!= -1){
start=mycookie.indexOf("=",start1)+1; 
var end = mycookie.indexOf(";",start);
if (end==-1){
 end=mycookie.length;}
 var value=unescape(mycookie.substring(start,end));
 if (value==null){
 return "";
 }else{
 return value;
 }
 }
}
///////////////////////////////////
function delcookie(){									//删除cookie
	var today = new Date();
	var expireDay = new Date();
	var msPerDay = -3*24*60*60*1000;
	expireDay.setTime( today.getTime() + msPerDay );
	document.cookie = "username= ;expires=" + expireDay.toGMTString()+"; path=/";
}

//////////////////////////////////////////
function createXMLHttps()			//xmlHTTPRequest对象声明函数
{
  var ret = null;					//定义xmlhttprequest变量
  try {
    ret = new ActiveXObject('Msxml2.XMLHTTP');
  }
  catch (e) {
    try {
       ret = new ActiveXObject('Microsoft.XMLHTTP');
    }
    catch (ee) {
       ret = null;
    }
  }
  if (!ret && typeof XMLHttpRequest != 'undefined')
     ret = new XMLHttpRequest();
    return ret;
}
///////////////////////////////////////

function sz_checkuser(){			//用户登录身份验证
   var user="",pwd="",str="",SendData;
   user=GE("username").value;
   pwd=GE("password").value;
   var X = createXMLHttps();
   if(X){	//if(x) start
     X.onreadystatechange=function(){	//function start
     if(X.readyState==4){
       if(X.status==200){								//提交完成，数据库修改完毕后的数据更新显示
	   	  str=X.responseText.split(",");
	   	  if(str[0]=="1") {
			  creatCookie("username",user);
			  GE("u_l_title11").innerHTML="<p align=left>欢迎来到我爱散珠网</p>";
			  GE("u_l_form1").innerHTML="<p align=left>"+unescape(str[1])+"</p>";
		  }
       }
     }
    };		//function end
    X.open('POST','user/usercheck.asp',true);					//用post 方法传送数据
    X.setRequestHeader('Content-Type','application/x-www-form-urlencoded');  
    SendData = 'username='+escape(user)+'&password='+escape(pwd);
    X.send(SendData);
   }		//if(x) end 
}

function login_info(){
   var user="",str="",SendData;
   if(!readcookie("username")){		//如果cookie中存在username,则判断用户身份	if start
       GE("u_l_form1").style.visibility="hidden";
	   var X = createXMLHttps();
	   if(X){	//if(x) start
		 X.onreadystatechange=function(){	//function start
		 if(X.readyState==4){
		   if(X.status==200){								//提交完成，数据库修改完毕后的数据更新显示
			  str=X.responseText.split(",");
			  if(str[0]=="1") {
			  	  GE("u_l_form1").style.visibility="visible";
				  GE("u_l_title11").innerHTML="<p align=left>欢迎来到我爱散珠网</p>";
				  GE("u_l_form1").innerHTML="<p align=left>"+unescape(str[1])+"</p>";
			  }else{
				  GE("u_l_form1").style.visibility="visible";
				  delcookie();
			  }
		   }
		 }
		};		//function end
		X.open('POST','user/user_session_check.asp',true);					//用post 方法传送数据
		X.setRequestHeader('Content-Type','application/x-www-form-urlencoded');  
		SendData = '';
		X.send(SendData);
	   }		//if(x) end 
   }else{								//用户身份验证	if　end 
   		GE("u_l_form1").style.visibility="visible";
   }
}