function resize(which, max) {
	var elem = $(which);

	if (elem == undefined || elem == null) return false;
	if (max == undefined) max = 100;

	if (elem.width() > elem.height()) {
		if (elem.width() > max) {
			var ratio = elem.height() / elem.width();
			elem.width(max);
			elem.height(elem.height() * ratio);
		}
	} else {
		if (elem.height() > max) {
			var ratio = elem.width() / elem.height();
			elem.height(max);
			elem.width(elem.width() * ratio);
		}
	}
}