window.onload = function () {
            var slide_container = $('div.sliderGallery');
            var ul = $('ul', slide_container);
            
            var itemsWidth = ul.innerWidth() - slide_container.outerWidth();
            
            $('.slider', slide_container).slider({
                minValue: 0,
                maxValue: itemsWidth,
                handle: '.handle',
                stop: function (event, ui) {
                    ul.animate({'left' : ui.value * -1}, 500);
                },
                slide: function (event, ui) {
                    ul.css('left', ui.value * -1);
                }
            });
        };