/**
 * LavaLamp - A menu plugin for jQuery with cool hover effects.
 * @requires jQuery v1.1.3.1 or above
 *
 * http://gmarwaha.com/blog/?p=7
 *
 * Copyright (c) 2007 Ganeshji Marwaha (gmarwaha.com)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Version: 0.1.0
 * modified 11.28/2007 DHW
 * Modified by Houman kargaran to compatible with the latest jquery lib.
 */
(function($) {
$.fn.lavaLamp = function(o) {
    o = $.extend({ fx: "linear", speed: 500, click: function(){} }, o || {});
    return this.each(function() {
        var me = $(this), noop = function(){},
            $back = $('<li class="back"><div class="left"></div></li>').appendTo(me),
            $li = $("li", this), curr = $("a.selected", this).parent('li')[0] || me[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(el) {
            $back.css({ left: el.offsetLeft+"px", width: el.offsetWidth+"px", opacity: el.tagName == 'LI' ? 100 : 0});
            curr = el;
        };

        function move(el) {
            $back.dequeue().
            animate({
                width: el.offsetWidth,
                left: el.offsetLeft,
                opacity: el.tagName == 'LI' ? 100 : 0
            }, o.speed, o.fx);
        };

    });
};
})(jQuery);