var buyed_once = false;
$(function(){
    //записываем данные по корзине слева
    num = getCardNum();
    hr = window.location.href ;

    root = hr.substr(0,hr.indexOf('test.zhempodvorye.ru'))+"test.zhempodvorye.ru";
    $(".middle-content").append("\
	 <div class=right onclick='window.location.href=\""+root+"/test.zhempodvorye.ru/default.htm\"'>\
         <div class=basket style='cursor:pointer'>\
            <div class=block-title>Сундучок</div>\
            <p>Товаров: <strong>"+num+" шт</strong></p>\
			 <p><strong><a href='#' onclick='clearCart();location.href=location.href' style='font-size:14px;color:white'>Очистить корзину</a></strong></p>\
        </div>\
    </div>");
/*

    //записываем записи из общей таблицы
     $('#example tbody tr td a').each(function(i){
        href = $(this).attr('href');
        id = href.substr(href.lastIndexOf('/')+1);

        if(getCookie(id)=='null'){
            setCookie(id,$(this).parent().parent().html(),null,'../../');

        }
    }); */
    //защита
    $('form.ajax-cart-form').attr('action',location.href+'#');
	  //скрываем кнопку
    href = location.href;
    id = href.substr(href.lastIndexOf('/')+1);
    if(exists(id))
        clear_buy_button();
	
    //при покупке
 $('form.ajax-cart-form').submit(function(){
		var cnt = $('#edit-qty').val();
			
		var body1 = $("body").html();
		var match = body1.match(/<A class=model href=\"(.*?)\"/gi);
		if (!match){
			var match = body1.match(/\"model\">(.*?)<\/a/);
		}
		if (match){
			var match1 = match[0].match(/href=\"(.*?)\"/);
			id2 = match1[1].substr(match1[1].lastIndexOf('/')+1);
		}else{
			id2 = 0;
		}
		var ssize = 0;
		//Если есть обязательное поле
		if($('.required').size()>0&&buyed_once==false){
			if($('.required').val()==''){
				alert('Укажите размер');
				return false;
			}
			ssize = $('.required option[selected]').text();
			buyed_once = true;
			//alert(ssize);
		}
		h = location.href;
        id = h.substring(h.lastIndexOf('/')+1);

		
        card = getCookie('card');
		var use_1 = true;
		var use_2 = true;
		if(exists(id)){
			use_1 = false;
			if (id2>0){
				if (exists(id2)){
					return false;
				}
			}else{
				return false;
			}
        }else{
			if (id2>0){
				if (exists(id2)){
					use_2 = false;
				}
			}else{
				use_2 = false;
			}
		}
		if (use_1){
			if(card!=null&&card!=""){
				card=card+'-'+id;
			}else{
				card = id;
			}
		}
		if (use_2){
			if(card!=null&&card!=""){
				card=card+'-'+id2;
			}else{
				card = id2;
			}
		}
		clear_buy_button();
        setCookie('card',card,null,'/');
		if (use_1){
			var p1 = $('.catalogue-img img:eq(0)').attr('src');
			p1 = '../'+str_replace(p1,'../','');
			h = str_replace(p1,'../default.htm','');
			color = $('#color_zp option:selected').text();
			$('#color_zp_span').remove();	
			html = $('#attr-goods').html();
			html+='<span id="color_zp_span">'+color+'</span>';
			if(ssize!=0){
				html+='<br><strong>Размер:</strong> '+ssize;
			}
			html+='<br><strong>Количество:</strong> '+cnt;
			
			setCookie(id,$.trim("<td><img src='"+h+"'></td><td>"+html),null,'/');
		}
		if (use_2){
			var p2 = $('.catalogue-img img:eq(1)').attr('src');
			p2 = '../'+str_replace(p2,'../','');
			h2 = str_replace(p2,'../default.htm','');
			color = $('#color_zp2 option:selected').text();
			$('#color_zp_span2').remove();	
			html = $('#attr-goods2').html();
			html+='<span id="color_zp_span2">'+color+'</span>';
			if(ssize!=0){
				html+='<br><strong>Размер:</strong> '+ssize;
			}
			html+='<br><strong>Количество:</strong> '+cnt;
			
			setCookie(id2,$.trim("<td><img src='"+h2+"'></td><td>"+html),null,'/');
		}
        return false;
    });


});

function clearCart(){
	card = getCookie('card');
	if(card!=null&&card!=''){	
		if(card.indexOf('-')==-1)
			card = [card];
		else
			card = card.split('-');
		for(i=0;i<card.length;i++){
			setCookie(card[i],'',null,'/');
			}
		setCookie('card','',null,'/');
	}
}

function getCardNum(){
    c = getCookie('card');
    if(c!=''&&c!=null)
        a = c.split('-').length;
    else
        a = 0;
    return a;

}

function clear_buy_button(){
       $('form.ajax-cart-form input[type=submit]').parent().html('<br><span style="font-weight:bold;font-size:18px" class="ok">Куплено</span>');
}
function setCookie (name, value, expires, path, domain, secure) {
    expires = 'Mon, 01-Jan-2020 00:00:00 GMT';
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
    var cookie = " " + document.cookie;
    var search = " " + name + "=";
    var setStr = null;
    var offset = 0;
    var end = 0;
    if (cookie.length > 0) {
        offset = cookie.indexOf(search);
        if (offset != -1) {
            offset += search.length;
            end = cookie.indexOf(";", offset)
            if (end == -1) {
                end = cookie.length;
            }
            setStr = unescape(cookie.substring(offset, end));
        }
    }
    return(setStr);
}

function str_replace(haystack, needle, replacement) {
    var temp = haystack.split(needle);
    return temp.join(replacement);
}

function exists(id){
q = getCookie('card');
if(q&&q!='null'&&q.indexOf(id)!=-1)
    return true;

return false;
}

$(document).ready(
    function() {

        if ($.browser.msie && ($.browser.version == "6.0")) {
            $("div.footer-designer a").hover(
                function() {
                    $(this).find("strong").addClass("hover");
                },

                function() {
                    $(this).find("strong").removeClass("hover");
                }
            );
        }

        var curRel    = 1;
        var curZIndex = 100;
        $("div.form-item select").each(
            function() {
                var curSelect = $(this);
                curSelect.parent().css("z-index", curZIndex--);
              //  curSelect.attr("rel", curRel++).niceSelect();
            }
        );

        $("div.catalogue-field select").each(
            function() {
                var curSelect = $(this);
                curSelect.parent().parent().css("z-index", curZIndex--);
            //    curSelect.attr("rel", curRel++).niceSelect();
            }
        );

    }
);

function delCard(id){

if(exists(id)){
	
	q = getCookie('card');
	if(q.indexOf('-')==-1)
		q = [q];
	else
		q = q.split('-');	
	newC = [];
	for(i=0;i<q.length;i++){

		if(q[i]!=id)
			newC[newC.length] = q[i];
	}
	setCookie('card',newC.join("-"),null,'/');
	setCookie(id,'',null,'/');
	window.location.replace( window.location.href);
}
}

Скрипт офлайн корзины

jQuery