function highlightHeart(index,max) {
	for (i=1; i<max; i++) {
		img = document.getElementById("heart"+i);
		if (i<=index){
			img.src="images/heart_on.jpg";
		} else {
			img.src="images/heart_off.jpg";
		}
	}
	rating = document.getElementById("rating");
	rating.value = index;
	
} 

function validateRatingForm() {
}