function safe_submit(f) {
	for (i=1; i<f.elements.length; i++) {
		if (f.elements[i].type == 'submit' | f.elements[i].type == 'button') {
			f.elements[i].disabled = true;
		}
	}
	f.submit();
	safeSubmit = block_it;
	return false;
}

function block_it(f) {
	return false;
}