[apisklov]

в оригинале все выглядит так
HTML:

<div class="item border">
		<img src="img/shop/zont1.png" width="200">
		<p><b>Зонт1</b> |  Цена: 1200 руб</p> 
				<div class="sum_but">
					<span class="plus">+</span>
					<input value="1" maxlength="2" name="" id='' type="text" class="mam">
					<span class="minus">-</span>
				</div>
		<button  class="border" onclick="cart.addToCart(this, '001', 'Зонт1', '1200', '')">Купить</button>
	</div>

JS - обработчик:

function WICard(obj)
	{
	this.widjetX = 0;
	this.widjetY = 0;	
	this.widjetObj;
	this.widjetPos;
	this.cardID = "";
	this.DATA = {};
	this.IDS = [];
	this.objNAME = obj;
	this.CONFIG = {};
	this.IMG = "...";
	
	
	this.init = function(widjetID, config)
		{
		this.CONFIG = config || {};
		try {
			this.DATA = JSON.parse(localStorage.getItem(widjetID)); // code to try
			//console.log("TRY - OK");
			if ($.isEmptyObject(this.DATA))
				{
				this.DATA = {};
				}	
					
			} 
			catch (e) 
			{
			this.DATA = {};
			//onsole.log("TRY - BED");
			}	
		try {
			this.IDS = JSON.parse(localStorage.getItem(widjetID + "_ids"));
			if ($.isEmptyObject(this.IDS))
				{
				this.IDS = [];
				}	
			} 
			catch (e) 
			{
			this.IDS = [];
			}	
		//console.log(this.DATA);
		
		this.cardID = widjetID;	
		$("body").append("<div class='bird' id='"+widjetID +"_bird'></div>");	
		this.widjetObj = $("#" + widjetID);
		this.widjetPos = this.widjetObj.position();	
		
		if ($.isEmptyObject(this.DATA))
			{
			this.widjetObj.html("Корзина пуста");
			}
			else
			{
			this.reCalc();	
			this.renderBasketTable();
			}
		
		}
		
/***********************************************************************************************
 * example: onclick="cart.addToCart(this, '2', 'Name of comic 2', '25500')						
 **********************************************************************************************/

	$('button').click(function() {
			num = $(this).parent().find('input').val();
			alert(num);
	})

	this.addToCart = function(curObj, id, name, price, num)
		{	
			
		id = ( $.isNumeric(id) ) ? "ID" + id.toString() : id;
		var goodieLine = {"id" : id, "name" : name, "price": price, "num" : num, "url" : document.location.href};
		
		
		
		if ($.isEmptyObject(this.DATA))
			{
			this.DATA[id] = goodieLine;	
			this.IDS.push(id);
			}
		else

		
		for(var idkey in this.DATA) 
			
			{
			if($.inArray(id, this.IDS) === -1)
				{
				
				this.DATA[id] = goodieLine;
				this.IDS.push(id)
				
				}
			else	
			if (idkey == id)
				{

				this.DATA[idkey].num += num;
				
				}
			}


		
		localStorage.setItem(this.cardID, JSON.stringify(this.DATA));
		localStorage.setItem(this.cardID + "_ids", JSON.stringify(this.IDS));
		this.reCalc();
		
		this.renderBasketTable();
		
		
		
		var bird = $("#" + this.cardID + "_bird"); 
		var pos = $(curObj).position();	
		bird.offset({ top: pos.top, left: pos.left});
		bird.html(price);
		
		bird.show();
		
		bird.animate(
				{
				'left': this.widjetPos.left, 
				'top': this.widjetPos.top 
				}
				,
				{
				'duration': 500, 
				complete:  function() 
					{ 
					bird.offset({ top: -300, left: -300});
					}
				});
				
		if (this.CONFIG.showAfterAdd)
			{
			cart.showWinow('bcontainer', 1);
			}
		}