// JScript 文件
function MyLogin()
{
    document.getElementById("MyLoginForm").style.display="block";
}
function CancelLogin()
{
    document.getElementById("MyLoginForm").style.display="none";
    document.getElementById("MyUserName").value="";
    document.getElementById("MyPassword").value=""
    document.getElementById("MyValidateCode").value="";
}
function OnLogin()
{
    if(document.getElementById("MyUserName").value=="")
    {
       alert('用户名不能为空！');
       return;
    }
    else if(document.getElementById("MyPassword").value=="")
    {
       alert('密码不能为空！');
       return;
    }
    else
    {
       LoginAtOnce(document.getElementById("MyUserName").value,document.getElementById("MyPassword").value,document.getElementById("MyValidateCode").value);
    }
}
function LoginAtOnce(UserName,UserPassword,UserCheckCode)
{
    CreatXMLHttp(); 
    var Str="../BookShopping/UserLoginAJAX.aspx?name="+UserName+"&pd="+UserPassword+"&cd="+UserCheckCode+"&tm="+new Date().getTime();
    xmlHttp.Open("Get",Str,true);
    xmlHttp.onreadyStateChange=StateChageLogin;
    xmlHttp.send(null);
}
function StateChageLogin()
{
    if(xmlHttp.readyState==4)
    {
       if(xmlHttp.status==200)
       {
          if(xmlHttp.responseText=="true")
          {
              alert('登陆成功！');
          }
          else
          {
             alert(xmlHttp.responseText);
             var Obj=document.getElementById("MyImageCode").src="../BookShopping/web_checkCode.aspx?tm="+new Date().getTime();   
          }
       }
    }
}