function changeToInCart(id) {
	//var e = $('addToCartDiv_' + id);

	img =  document.getElementById('img_' + id);
	
	img.src = "/images/itemincart.png";
	img.href="";

	checkout_div =    document.getElementById('gem_checkout_' + id);

	checkout_div.style.display = '';

}


function onCustomAddToCart(id, qtyid) {
	var s = $(qtyid).value;
	var qty = parseInt(s);
	if (isNaN(qty))
	{
		alert("Please enter a positive number of items");
		$(qtyid).value = '';
		$(qtyid).focus();
		return;
	}

	document.location.href = "http://www.gemalaya.com/add_to_cart.php?products_id=" + id + "&qty=" + qty + "&next=shopping_cart";
}

function onAddToCart(id, qty) {
	
	var effect = null;
	var effactEnabled = 0;
	try
	{
		effect = new Effect.Fade('addToCartDiv_' + id);
		effactEnabled =1;
	}
	catch(err)
	{
		//do nothing
	}

	var options = {};
	options.method = 'get';
	options.parameters = 'products_id=' + id + '&qty=' + qty;
	options.onSuccess = function(transport) {
		var json = transport.responseText.evalJSON(true);

		$('cart_subtotal').innerHTML = json.subtotal;
		$('cart_total_products').innerHTML = json.total_products;
		$('cart_total_items').innerHTML = json.total_items;

		changeToInCart(id);

		if (effactEnabled)
		{
			effect.cancel();
			new Effect.Appear('addToCartDiv_' + id);
		}
	}

	options.onFailure = function(transport) {
		alert("Failed! Item not added to cart.");
	}

	new Ajax.Request('/add_to_cart.php', options);
}