function CheckBookForm()
{    	
	if (!CheckField('SenderName', '.{2,}'))
    {
        return false;
    }
    if (!CheckField('Phone', '[0-9 \+\(\)]{6,}'))
    {
        return false;
    }
	if (!CheckField('EMail', '.{3,}@.{3,}\..{2,}'))
    {
        return false;
    }

    document.ReservationForm.submit();
}