var widgets = {
    addToCart: function(shop_id, product_id, price, obj) {//{{{
        var amount 	= 1;
        product_id 	= Number(product_id);
        price		= Number(price);

		// Get price dynamically
		$.post('/my/s3/export/shop/product.php', {
				'mode' 			: 'json',
				'action' 		: 'get-product',
				'shop_id' 		: shop_id,
				'product_id' 	: product_id
			},
			function (data) {//{{{
				if (data && data.product_price != undefined) {
					price = Number(data.product_price);
				};
				var result = true, amount_limit = amount;

				/* If window._shop.products.PRODUCT_ID.amount is set, then we must limit
				* amount to that value */
				var has_amount_limit = (data.product_amount_limit == '1' ? true : false);
				if (has_amount_limit) {
					amount_limit = Number(data.product_amount);
					if (amount_limit < amount) {
						amount = amount_limit;
					}
				};

				// Input is valid?
				if (!isNaN(shop_id)&&(shop_id>0) && !isNaN(product_id) && (product_id>0)
					&&!isNaN(price)&&!isNaN(amount)&&(amount>0)) {     
					// Temporary variables
					var cart_new = "", cart_item_split, found = false, total_amount = 0, ta, e;

					// Read cookies	
					var total = readCookie('CART_TOTAL_'+shop_id);
					var cart = unescape(readCookie('CART_'+shop_id));

					// Split cart cookie into product_id=amount chunks
					var cart_split = cart.split(';');

					// Ensure total is of number data type
					if (isNaN(total)) total = Number(total);

					// Loop though cart item chunks	
					for (var i=0; i < cart_split.length; i++){
						// Split into product_id, amount
						cart_item_split = cart_split[i].split("=");

						// Valid?
						if (cart_item_split.length == 2){
							if (!found && cart_item_split[0] == product_id) {
								if (! (has_amount_limit && cart_item_split[1] >= amount_limit))
									total = Number(total) + price * amount;
								ta = amount + Number(cart_item_split[1]);
								if (ta > amount_limit)  {
									ta = amount_limit;
									result = false;
									widgets.msg(window._s3Lang['JS_SHOP_PRODUCT_AMOUNT_TOTAL']
												+ ': ' + amount_limit, obj);
								}

								found = true;

								if (cart_new!="") cart_new = cart_new + ";";                    
								cart_new = cart_new + product_id + "=" + ta;

								// Update total amount
								total_amount += ta;
							} else { // This is another product_id. So keep it w/out modifications
								if (cart_new!="") cart_new = cart_new + ";";                    
								cart_new = cart_new + cart_item_split[0] + "=" + cart_item_split[1];

								// Update total amount
								total_amount += Number(cart_item_split[1]);
							}
						} // ## if valid chunk
					} // ## for

					// The product_id is not found in the cart	
					if (!found) {
						if (cart_new!="") cart_new = cart_new + ";";                    
						cart_new = cart_new + product_id + "=" + amount;
						total = Number(total) + price * amount;

						// Update total amount
						total_amount += amount;
					}   

					// Round total price          
					total = Math.round(total*100)/100;          

					// Write cookies         
					createCookie('CART_'+shop_id,cart_new,10);
					createCookie('CART_TOTAL_'+shop_id,total,10);
					createCookie('CART_TOTAL_AMOUNT_'+shop_id,total_amount,10);

					// Update DOM nodes
					e = document.getElementById('cart_total');
					if (e) e.innerHTML = total;
					e = document.getElementById('cart_total_amount');
					if (e) e.innerHTML = total_amount;

					if (result)
						widgets.msg(window._s3Lang['JS_ADDED'], obj);

					return true; 
				}
			},//}}}
			'json'
		);
		
        return false;    
   },//}}}
  
   formatPrice : function(str, ts, dot) {
   		if (typeof str!='string') str = String(str);
   		if (ts == null) ts = ' ';
   		if (dot == null) dot = '.';
		if (dot != '.') str = str.replace('.', dot);
   		
   		var parts = str.split(dot), res = [], i;
		
		if (parts[0].length >= 4) {
		    for (i = (parts[0].length - 1), j=1; i>=0; --i, ++j) {
		        res.unshift(parts[0].charAt(i));
		        if (j % 3 == 0 && i>0)
		            res.unshift(ts);
		    }
		   
		    return res.join('') + (parts[1] ? dot + parts[1] : '');
		}
		return str;
	},

	addOnloadEvent : function (func) {
		var oldonload = window.onload;
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				if (oldonload) {
					oldonload();
				}
				func();
			}
		}
	},

	msg: function(text, obj) {
		if (!obj) return;
		var pos = findPos(obj);
		var d = document.createElement("DIV");
		if (d) {
			d.style.position = 'absolute';
			d.innerHTML = text;
			d.style.display = 'block';
			d.className = 'added-to-cart';
			d.style.left = (pos.x+obj.offsetWidth) + 'px';
			d.style.top = (pos.y+obj.offsetHeight) + 'px';
			document.body.appendChild(d);

			window.setTimeout(function() {
				if (d && d.parentNode) d.parentNode.removeChild(d);
				delete d;
			}, 1500);
		}	
	}
};

function findPos(obj) {
    var result = {x:0, y:0};

    if (obj.offsetParent) {
        while (obj.offsetParent) {
            result.y += obj.offsetTop;
            result.x += obj.offsetLeft;
            obj = obj.offsetParent;
        }
    } else {
        if (obj.x) result.x += obj.x;
        if (obj.y) result.y += obj.y;
    }

    return result;
}

// vim: noet fdm=marker