/*
 * LavaLamp - A menu plugin for jQuery with cool hover effects.
 * @requires jQuery v1.1.3.1 or above
*/

(function(jQuery) {
jQuery.fn.lavaLamp = function(o) {
    o = jQuery.extend({ fx: "linear", speed: 500, click: function(){} }, o || {});

    return this.each(function() {
        var me = jQuery(this), noop = function(){},
            jQueryback = jQuery('<li class="back"><div class="left"></div></li>').appendTo(me),
            jQueryli = jQuery("li", this), curr = jQuery("li.click", this)[0] || jQuery(jQueryli[0]).addClass("click")[0];

        jQueryli.not(".back").hover(function() {
            move(this);
        }, noop);

        jQuery(this).hover(noop, function() {
            move(curr);
        });

        jQueryli.click(function(e) {
            setCurr(this);
            return o.click.apply(this, [e, this]);
        });

        setCurr(curr);

        function setCurr(el) {
            jQueryback.css({ "left": el.offsetLeft+"px", "width": el.offsetWidth+"px" });
            curr = el;
        };

        function move(el) {
            jQueryback.each(function() {
                jQuery.dequeue(this, "fx"); }
            ).animate({
                width: el.offsetWidth,
                left: el.offsetLeft
            }, o.speed, o.fx);
        };

    });
};
})(jQuery);