function ActivateSlider(){
            var container = $('#products-container');
            var ul = $('#products');
            var itemsHeight = ul.innerHeight() - container.outerHeight();
            $('#products-slider').slider({
                orientation: "vertical",
                range: "min",
                min: 0,
                max: itemsHeight,
                value: itemsHeight,
                stop: function (event, ui) {
                    ul.animate({'top' : (itemsHeight - ui.value) * -1}, 500);
                },
                slide: function (event, ui) {
                    ul.css('top', (itemsHeight - ui.value) * -1);
                }
            });
}