if (!Galeria) {
    var Galeria = new function() {
        this.CalcularAncho = function(div) {
            ul = $(" > ul", div)
            var elements = $("> li", ul);
            var firstElement = $(elements[0]);
            var width = $(elements[0]).width();
            var totalWidth = elements.length * (width + elements[1].offsetLeft - elements[0].offsetLeft - width);
            ul[0].style.width = totalWidth + "px";
            return totalWidth;
        }
        this.Init = function(name) {
            var div = $("div#" + name);
            div.css({ overflow: "hidden" });
            div[0].setAttribute("IsSelected", "0");
            var ulWidth = this.CalcularAncho(div);
            var divWidth = div.width();
            div.mousemove(function(e) {
                if (div[0].getAttribute("IsSelected") == "0") {
                    var left = (e.pageX - div.offset().left) * (ulWidth - divWidth) / divWidth;
                    div.scrollLeft(left);
                }
            });
        }
    }
}