/**
 * 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: 0.2.0
 * Requires Jquery 1.2.1 from version 0.2.0 onwards. 
 * For jquery 1.1.x, use version 0.1.0 of lavalamp
 */

/**
 * Creates a menu with an unordered list of menu-items. You can either use the CSS that comes with the plugin, or write your own styles 
 * to create a personalized effect
 *
 * The HTML markup used to build the menu can be as simple as...
 *
 *       <ul class="lavaLamp">
 *           <li><a href="#">Home</a></li>
 *           <li><a href="#">Plant a tree</a></li>
 *           <li><a href="#">Travel</a></li>
 *           <li><a href="#">Ride an elephant</a></li>
 *       </ul>
 *
 * Once you have included the style sheet that comes with the plugin, you will have to include 
 * a reference to jquery library, easing plugin(optional) and the LavaLamp(this) plugin.
 *
 * Use the following snippet to initialize the menu.
 *   $(function() { $(".lavaLamp").lavaLamp({ fx: "backout", speed: 700}) });
 *
 * Thats it. Now you should have a working lavalamp menu. 
 *
 * @param an options object - You can specify all the options shown below as an options object param.
 *
 * @option fx - default is "linear"
 * @example
 * $(".lavaLamp").lavaLamp({ fx: "backout" });
 * @desc Creates a menu with "backout" easing effect. You need to include the easing plugin for this to work.
 *
 * @option speed - default is 500 ms
 * @example
 * $(".lavaLamp").lavaLamp({ speed: 500 });
 * @desc Creates a menu with an animation speed of 500 ms.
 *
 * @option click - no defaults
 * @example
 * $(".lavaLamp").lavaLamp({ click: function(event, menuItem) { return false; } });
 * @desc You can supply a callback to be executed when the menu item is clicked. 
 * The event object and the menu-item that was clicked will be passed in as arguments.
 */
function insImg(id) {
	var retval = '';
	switch (id) {
		case 'ref_1': retval = 1; break;
		case 'ref_2': retval = 2; break;
		case 'ref_3': retval = 3; break;
		case 'ref_4': retval = 4; break;
		case 'ref_5': retval = 5; break;
		case 'ref_6': retval = 6; break;
		case 'ref_7': retval = 7; break;
		case 'ref_8': retval = 8; break;
		case 'ref_9': retval = 9; break;
		case 'ref_10': retval = 10; break;
		
		case 'ref_a': retval = 'a'; break;
		case 'ref_b': retval = 'b'; break;
		case 'ref_c': retval = 'c'; break;
		case 'ref_d': retval = 'd'; break;
		case 'ref_e': retval = 'e'; break;
		case 'ref_f': retval = 'f'; break;
		case 'ref_g': retval = 'g'; break;
		case 'ref_h': retval = 'h'; break;
		case 'ref_i': retval = 'i'; break;
		case 'ref_j': retval = 'j'; break;
		case 'ref_k': retval = 'k'; break;
		case 'ref_l': retval = 'l'; break;
		case 'ref_m': retval = 'm'; break;
		case 'ref_n': retval = 'n'; break;
		case 'ref_o': retval = 'o'; break;
		case 'ref_p': retval = 'p'; break;
		case 'ref_q': retval = 'q'; break;
		case 'ref_r': retval = 'r'; break;
		case 'ref_s': retval = 's'; break;
		case 'ref_t': retval = 't'; break;
		case 'ref_u': retval = 'u'; break;
		case 'ref_v': retval = 'v'; break;
		case 'ref_w': retval = 'w'; break;
		case 'ref_x': retval = 'x'; break;
		case 'ref_y': retval = 'y'; break;
		case 'ref_z': retval = 'z'; break;
		
	}
	
	return retval;
}

(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 = $("li.current", this)[0] || $($li[0]).addClass("current")[0];

		var old = me;
		
        $li.not(".back").hover(function() {
			if ($('li.back').css("display") == "none")
				$('li.back').show();
            move(this);
        }, noop);

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

        $li.click(function(e) {
			if ($(this).attr("id") != "") {
				$('div#blaettern ul li.licurr img').attr('src','images/'+insImg($('div#blaettern ul li.licurr').attr("id"))+'.gif');		
				$(old).removeClass('licurr');	
				old = this;
	            setCurr(this);
				$(this).addClass('licurr');
				$('div#blaettern ul li.licurr img').attr('src','images/'+insImg($('div#blaettern ul li.licurr').attr("id"))+'_mo.gif');					
			}            
		return o.click.apply(this, [e, this]);
        });

        setCurr(curr);

        function setCurr(el) {
            //$back.css({ "left": el.offsetLeft+"px", "width": el.offsetWidth+"px" });
			if ($(el).attr("id") == 'ref_10')
				$back.css({ "left": el.offsetLeft+1+"px", "width": "18px" });
			else
				$back.css({ "left": el.offsetLeft+1+"px", "width": "9px" });			
            curr = el;
        };

        function move(el) {
			if ($(el).attr("id") == 'ref_10') {
	            $back.each(function() {
	                $(this).dequeue(); }
	            ).animate({
	                width: "18px",
	                left: el.offsetLeft+1
	            }, o.speed, o.fx);
			} else {
	            $back.each(function() {
	                $(this).dequeue(); }
	            ).animate({
	                width: "9px",
	                left: el.offsetLeft+1
	            }, o.speed, o.fx);
			}
        };

    });
};
})(jQuery);