//---------------------------------------------------------------------------------------------------------------
function addArticle(product_id) 
{
	var params = new Object(); 
	params.product_id = product_id;
	http("POST" , "custom/modules/shop/shop_ajax.cfc?method=addArticleAJAX", updateCart, params); 
}

//---------------------------------------------------------------------------------------------------------------
function updateCart(numProducts) 
{	
	var cart_data_span = document.getElementById("cart_data");
	var cart_label_span = document.getElementById("cart_label");
	if(numProducts > 0)
	{
		cart_data_span.innerHTML = "(" + numProducts + ")";
		cart_label_span.style.fontWeight = "bold";
	}
	else
	{
		cart_data_span.innerHTML = "";	
		cart_label_span.style.fontWeight = "normal";
	}
}