function detail_test(obj, id) {
	if ($('tips_body[' + id + ']').style.display == 'none') {
		$('tips_body[' + id + ']').style.display = 'block';
		obj.src = "/images/minus.png";
		obj.alt = "-";
		obj.title = "-";
	} else {
		$('tips_body[' + id + ']').style.display = 'none';
		obj.src = "/images/plus.png";
		obj.alt = "+";
		obj.title = "+";
	}
}