function userlogon()
{
    //ButtonStatus("submit", false);       
    var uname = document.getElementById('username').value;
    var upwd = document.getElementById('passwd').value;
    
    if (uname == "" || upwd == "")
    {
        alert('The User Name or Password can not be blank.');
        //ButtonStatus("submit", true);       
        return false;
    }   
}