function Form_submit(form)
{
	if ((form.elements['_m'].value == 1) && (form.elements['_s_' + form.id].value == 1))
	{
		if (!confirm('This form has already been submitted.  Are you sure you want to do it again? (You may have clicked the button twice by mistake.)'))
		{
			return false;
		}
	}
	
	valid_func = eval(form.elements['_v'].value);
	var valid = valid_func(form);
	form.elements['_s_' + form.id].value = Number(valid);
	return valid;
}