(function($) {
    $.fn.lavaLamp = function(o) {
        o = $.extend({fx:"linear",speed:500,click:function() {
        }}, o || {});
        return this.each(function() {
            var b = $(this),noop = function() {
            },$back = $('<li class="back"><div class="left"></div></li>').appendTo(b),$li = $("li", this),curr = $("li.current", this)[0] || $($li[0]).addClass("current")[0];
            $li.not(".back").hover(function() {
                move(this)
            }, noop);
            $(this).hover(noop, function() {
                move(curr)
            });
            $li.click(function(e) {
                setCurr(this);
                return o.click.apply(this, [e,this])
            });
            setCurr(curr);
            function setCurr(a) {
                $back.css({"left":a.offsetLeft + "px","width":a.offsetWidth + "px"});
                curr = a
            }
            function move(a) {
                $back.each(function() {
                    $.dequeue(this, "fx")
                }).animate({width:a.offsetWidth,left:a.offsetLeft}, o.speed, o.fx)
            }
        })
    }
})(jQuery);