jquery加入购物车飞入的效果

    function MoveBox(obj) {
        var divTop = $(obj).offset().top;
        var divLeft = $(obj).offset().left;
        $(obj).css({ "position": "absolute", "z-index": "500", "left": divLeft + "px", "top": divTop + "px" });
        $(obj).parent().append($(obj).clone());
        $(obj).animate({ "left": ($("#posBtnR", parent.document).offset().left - $("#posBtnR", parent.document).width()) + "px", "top": $("#posBtnR", parent.document).offset().top + "px", "width": "100px", "height": "70px" }, 1000, function () {
            $(obj).animate({ "left": $("#posBtnR", parent.document).offset().left + "px", "top": $("#posBtnR", parent.document).offset().top + "px" }, 1000);
            num++;
            $("#btn_num", parent.document).text(num).animate({ ‘opacity‘: 1, ‘marginTop‘: ‘0‘ }, 500, function () {
                setTimeout(function () { $("#btn_num", parent.document).hide() }, 8000);
            });
        });
    }