function checkForm()
{
    if(document.frmLogin.username.value=="")
    {
        alert('Please enter a Username');
        document.frmLogin.username.focus();
        
        return false;
    }
    
    if(document.frmLogin.password.value=="")
    {
        alert('Please enter a Password');
        document.frmLogin.password.focus();
        
        return false;
    }

    return true;
}