function act(obj, field, action, type) {
	document.getElementById(field).value += ('[' + ((obj.value == action) ? ('') : ('/')) + action + ']');
	obj.value = action + (((obj.value == action) && (type != 'single')) ? (' *') : (''));
	document.getElementById(field).focus();
}

function setCheckboxes(the_form, field, do_check) {
	if (typeof(document.forms[the_form].elements[field]) != 'undefined') {
	    var elts = document.forms[the_form].elements[field];
		var elts_cnt = (typeof(elts.length) != 'undefined') ? elts.length : 0;
		if (elts_cnt) {
			for (var i = 0; i < elts_cnt; i++) {
				elts[i].checked = do_check;
			}
		} else {
			elts.checked = do_check;
		}
		return true;
	} else {
		return false;
	}
}