function add_email_text()
{
        var email = document.getElementById("login_email").value;
        if(email == "")
        {
                document.getElementById("login_email").className = 'email_textbox_watermark';
        }
}

function clear_email()
{
        document.getElementById("login_email").className = 'email_textbox';
}

function add_password_text()
{
        var password = document.getElementById("login_password").value;
        if(password == "")
        {
                document.getElementById("login_password").className = 'password_textbox_watermark';
        }
}

function clear_password()
{
        document.getElementById("login_password").className = 'password_textbox';
}