function CreateXmlHttp()
    {
        var xmlHttp = false;
        try 
        {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e)
        {
              try 
              {
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
              } 
              catch (e2) 
              {
                xmlHttp = null;
              }
        }
        
        return xmlHttp;
    }
    //登录
    function Login(username,password)
    {
        var xmlHttp=CreateXmlHttp();
        if(xmlHttp != null)
        {
            xmlHttp.open("GET","http://localhost/eMagzine/BBS/Test2.aspx?username="+username+"&password="+password+"&Do=Login",false);
            xmlHttp.onreadystatechange=function()
            {
                if (xmlHttp.readyState == 4) 
                {
                    var response = xmlHttp.responseText;
                    return response;
                }
                else
                {
                  return "???";
                }
            }
            xmlHttp.send(null);
        }
        else
        {
          alert("ajax应用错误！");
        }
    }
    //退出登录
    function LoginOut(username,userkey)
    {
      var xmlHttp=CreateXmlHttp();
        if(xmlHttp != null)
        {
            xmlHttp.open("GET","http://localhost/eMagzine/BBS/Test2.aspx?username="+username+"&userkey="+userkey+"&Do=LoginOut",false);
            xmlHttp.onreadystatechange=function()
            {
                if (xmlHttp.readyState == 4) 
                {
                    var response = xmlHttp.responseText;
                    return response;
                }
                else
                {
                  return "登录尚未成功";
                }
            }
            xmlHttp.send(null);
        }
        else
        {
          alert("ajax应用错误！");
        }
    }
    function GetUserkey()
    {
      return document.getElementById("userkey").value;
    }
    function Register(username,password)
    {
        var xmlHttp=CreateXmlHttp();
        if(xmlHttp != null)
        {
            xmlHttp.open("GET","http://localhost/eMagzine/BBS/Test2.aspx?username="+username+"&password="+password+"&Do=Register",false);
            xmlHttp.onreadystatechange=function()
            {
                if (xmlHttp.readyState == 4) 
                {
                    var response = xmlHttp.responseText;
                    return response;
                }
                else
                {
                  return "???";
                }
            }
            xmlHttp.send(null);
        }
        else
        {
          alert("ajax应用错误！");
        }
    }
function GetPassword(EmailStr)
{
    var xmlHttp=CreateXmlHttp();
        if(xmlHttp != null)
        {
            xmlHttp.open("GET","http://localhost/eMagazine/ForgetPassword.aspx?Email="+EmailStr+"",false);
            xmlHttp.onreadystatechange=function()
            {
                if (xmlHttp.readyState == 4) 
                {
                    var response = xmlHttp.responseText;
                   // return response;
                     var obj=document.getElementById("what");
                   // var vv=GetPassword(vaobj.value);
                    obj.innerHTML=response;
                }
                else
                {
                     var obj=document.getElementById("what");
                    var vaobj=document.getElementById("Text1")
                   // var vv=GetPassword(vaobj.value);
                    obj.innerHTML="<img src='Images/loading.gif'>'";
                }
            }
            xmlHttp.send(null);
        }
        else
        {
          alert("ajax应用错误！");
        }
}