function LoginJs()
{
    var strUser = $get("txtUserName").value;
    var strPwd =  $get("txtPwd").value;
    if(strUser=="")
    {
        alert("请输入用户名！");
        $get("txtUserName").focus();
        return false;
    }
    
    if(strPwd=="")
    {
        alert("请输入密码！");
        $get("txtPwd").focus();
        return false;
    }
    Login.GetLogins(strUser,strPwd,callBackLogin);
}

function callBackLogin(result)
{
    if(result=="1")
    {
        //        window.location.href="Exhibitor/Reg/Step1.aspx";
        window.location.href = "Default.aspx";   
    }
    else
    {
        var strRe= result.substring(result.indexOf('_')+1);
        alert(strRe);
    }
}

function  LoginExsit()
{
    Login.DeleteSession(callBackDelete);
}
function callBackDelete(result)
{
        window.location.href="Default.aspx";   
}

function KeyEnter()
{
    if( window.event.keyCode==13)
    {
         LoginJs();
    }
}