function checkData()
{
    var EmailReg=/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
    if(document.getElementById("txt_Email").value == "")
    {   
        document.getElementById("LabErr").innerHTML = "Please fill in your email."
        return false;
    }
    else if(!EmailReg.test(document.getElementById("txt_Email").value))
    {
        document.getElementById("LabErr").innerHTML = "Your email is invalid."
        return false;
    }
    else if(document.getElementById("Txt_Validate").value == "")
    {
        document.getElementById("LabErr").innerHTML = "Please fill in the validate code."
        return false;
    }
    else
    {
        document.getElementById("LabErr").innerHTML = ""
    }
}