function clearStars() {
	for( i=1; i<=5; i++)
	{
		$('rating_star_' + i).src = '/images/rating_empty.png';
	}
}

function highlightStars(selected_item) {
	// clear the previous settings
	clearStars();
	// take the current star number and highlight it and all below it
	for( i=1; i<=selected_item; i++)
	{
		$('rating_star_' + i).src = '/images/rating_full.png';
	}
}

function setStars(val) {
	$('trail_comment_rating').value = val;
}

function reloadStars() {
	clearStars();
	highlightStars($('trail_comment_rating').value);
}