function empty_form(form_id) {
	form = document.getElementById(form_id);
	if (! form) form = eval("document.all." + form_id);
	for(a=0;a < form.length; a++) {
		if ((form.elements[a].type == 'text') || (form.elements[a].type == 'textarea')) form.elements[a].value = "";
		if (form.elements[a].type == 'checkbox') form.elements[a].checked = false;
		if (form.elements[a].type == 'radio') form.elements[a].selected = false;
	}
	return false;
}