function addToCart(photo_id) {
	sendData(photo_id);
}
function loadShoppingData() {
	var x;
	var ShoppingCart = GetShoppingCartData(); 
		
	for (x in ShoppingCart) {
		//$('loading_'+ShoppingCart[x]).style.display = "none";
		$('add_to_cart_'+ShoppingCart[x]).innerHTML = 'Added to cart';
		//document.getElementById('add_to_cart_'+ShoppingCart[x]).innerHTML = 'Added to cart';
	}
}
function sendData (photo_id) {
	var url    = '/shopping_cart/add_to_cart/' + photo_id;
	//var myAjax = new Ajax.Request( url, {method: 'post', onLoading: showLoad(photo_id), onComplete: showResponse} );
	var myAjax = new Ajax.Request( url, {method: 'post', onLoading: showLoad(photo_id), onComplete: showResponse(photo_id)} );
}
function showResponse (photo_id) {
	$('loading_'+photo_id).style.display = "none";
	$('add_to_cart_'+photo_id).innerHTML = 'Added to cart';
}
function showLoad (photo_id) {
	$('loading_'+photo_id).style.display = "block";
}