/**
* jCarouselLite - jQuery plugin to navigate images/any content in a carousel style widget.
* @requires jQuery v1.2 or above
*
* http://gmarwaha.com/jquery/jcarousellite/
*
* 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: 1.0.1
* Note: Requires jquery 1.2 or above from version 1.0.1
*/
/* @author Ganeshji Marwaha/ganeshread@gmail.com
*/
(function($) {                                          // Compliant with jquery.noConflict()
	$.fn.jCarouselLite = function(o) {
		o = $.extend({
			btnPrev: null,
			btnNext: null,
			btnGo: null,
			mouseWheel: false,
			auto: null,
			enableGoogleMaps: false,
			speed: 1000,
			easing: null,

			vertical: true,
			circular: true,
			visible: 3,
			start: 0,
			scroll: 1,
			rows: 2,

			beforeStart: null,
			afterEnd: null
		}, o || {});

		return this.each(function() {                           // Returns the element collection. Chainable.

			var running = false, animCss = o.vertical ? "top" : "left", sizeCss = o.vertical ? "height" : "width";
			var div = $(this), ul = $("ul", div), tLi = $("li:visible", ul), tl = $("input[id$=uxNumberOfItems]").val(), v = o.visible, rows = o.rows;
			div.css("visibility", "visible");
			div.css({ overflow: "hidden", position: "relative", "z-index": "2", left: "0px" });

			ul.css({ margin: "0", padding: "0", position: "relative", "list-style-type": "none", "z-index": "1" });

			var li;
			var itemLength = $("input[id$=uxNumberOfItems]").val();
			var curr;
			var liSize;
			var ulSize;
			var divSize;

			reEvaluate();
			function reEvaluate() {
				li = $("li:visible", ul), curr = o.start;
				itemLength = $("input[id$=uxNumberOfItems]").val();
				liSize = o.vertical ? height(li) : width(li);   // Full li size(incl margin)-Used for animation
				var numColumns = v;
				while (numColumns > 2) {
					if (numColumns * numColumns > itemLength)
						numColumns--;
					else
						break;
				}
				ulSize = liSize * (Math.ceil(itemLength / rows) > numColumns ? Math.ceil(itemLength / rows) : numColumns);                   // size of full ul(total length, not just for the visible items)
				//divSize = width(li) * v;                           // size of entire div(total length for just the visible items)

				li.css({ width: li.width(), height: li.height() });
				ul.css("height", ulSize + "px");

				//div.css("width", divSize + "px");                     // Width of the DIV. length of visible images
				div.css("height", height(li) * numColumns + "px");
				if (o.btnPrev) {
					if (itemLength / rows <= v || curr == o.start)
						$(o.btnPrev).addClass("disabled");
					else
						$(o.btnPrev).removeClass("disabled");
				}
				if (o.btnNext) {
					if (itemLength / rows <= v)
						$(o.btnNext).addClass("disabled");
					else
						$(o.btnNext).removeClass("disabled");
				}
			}
			if (o.btnPrev)
				$(o.btnPrev).click(function() {
					if (!$(this).is(".disabled")) {
						if (o.enableGoogleMaps) {
							clearMarkers();
							for (var i = 0; i < resultsArray[curr / o.scroll - 1].length; i++)
								codeAddress(resultsArray[curr / o.scroll - 1][i], i == resultsArray[curr / o.scroll - 1].length - 1);
						}
						return go(curr - o.scroll);
					}
				});

			if (o.btnNext)
				$(o.btnNext).click(function() {
					if (!$(this).is(".disabled")) {
						if ($(o.btnPrev).is('.disabled'))
							curr = 0;
						//Add load on demand here
						if ($("li:visible", ul).size() < parseInt(itemLength)) {
							LoadNextSet((curr / v) + 2);
						}
						else if (o.enableGoogleMaps) {
							clearMarkers();
							for (var i = 0; i < resultsArray[(curr / v) + 1].length; i++)
								codeAddress(resultsArray[(curr / v) + 1][i], i == resultsArray[(curr / v) + 1].length - 1);
						}
						return go(curr + o.scroll);
					}
				});

			if (o.mouseWheel && div.mousewheel)
				div.mousewheel(function(e, d) {
					if (d <= 0) {
						if (!$(o.btnNext).is(".disabled")) {
							if ($(o.btnPrev).is('.disabled'))
								curr = 0;
							//Add load on demand here
							if ($("li:visible", ul).size() < parseInt(itemLength)) {
								LoadNextSet((curr / v) + 2);
							}
							else if (o.enableGoogleMaps) {
								clearMarkers();
								for (var i = 0; i < resultsArray[(curr / v) + 1].length; i++)
									codeAddress(resultsArray[(curr / v) + 1][i], i == resultsArray[(curr / v) + 1].length - 1);
							}
							return go(curr + o.scroll);
						}
					}
					else {
						if (!$(o.btnPrev).is(".disabled")) {
							if (o.enableGoogleMaps) {
								clearMarkers();
								for (var i = 0; i < resultsArray[curr / o.scroll - 1].length; i++)
									codeAddress(resultsArray[curr / o.scroll - 1][i], i == resultsArray[curr / o.scroll - 1].length - 1);
							}
							return go(curr - o.scroll);
						}
					}
				});

			function go(to) {
				atBeginning = $(o.btnPrev).is('.disabled');
				goingBackwards = to <= curr;

				if (!goingBackwards)
					reEvaluate();
				else
					li = $("li:visible", ul);

				if (!running) {

					if (to < 0 || to > Math.ceil((itemLength - v) / rows)) return;
					else curr = to;
					// If neither overrides it, the curr will still be "to" and we can proceed.

					if (atBeginning)
						if (curr > o.scroll)
						curr = o.scroll;

					running = true;


					if (!goingBackwards) {
						ul.animate(
							{ left: -(v * width(li)) }, o.speed / 2, o.easing
						);

						ul.animate(
							{ left: (v * width(li)) }, 0, o.easing
						);

						ul.animate(
							{ top: -(curr * height(li)) }, 0, o.easing
						);

						ul.animate(
							{ left: 0 }, o.speed / 2, o.easing
						);
					}
					else {
						ul.animate(
							{ left: (v * width(li)) }, o.speed / 2, o.easing
						);

						ul.animate(
							{ left: -(v * width(li)) }, 0, o.easing
						);

						ul.animate(
							{ top: -(curr * height(li)) }, 0, o.easing
						);

						ul.animate(
							{ left: 0 }, o.speed / 2, o.easing
						);
					}
					$("#numberResults").html("Showing results " + ((curr / o.scroll) * v * rows + 1) + "-" + ((curr / o.scroll + 1) * v * rows > itemLength ? itemLength : (curr / o.scroll + 1) * v * rows) + " of " + itemLength);
					running = false;
					$("div.AJAXLoading").hide();
					var isIE6 = ($.browser.msie && parseInt($.browser.version.substr(0, 1)) == 6);
					if (isIE6)
						$('embed, object, select').css('visibility', 'visible');
					// Disable buttons when the carousel reaches the last/first, and enable when not
					if (!o.circular) {
						$(o.btnPrev + "," + o.btnNext).removeClass("disabled");
						$((curr - o.scroll < 0 && o.btnPrev)
                        ||
                       (curr + o.scroll > Math.ceil((itemLength - v) / rows) && o.btnNext)
                        ||
						[]
						).addClass("disabled");
					}
				}
				return false;
			};
		});
	};

	function css(el, prop) {
		return parseInt($.css(el[0], prop)) || 0;
	};
	function width(el) {
		if (el.length > 0)
			return el[0].offsetWidth + css(el, 'marginLeft') + css(el, 'marginRight');
		else return;
	};
	function height(el) {
		if (el.length > 0)
			return el[0].offsetHeight + css(el, 'marginTop') + css(el, 'marginBottom');
		else return;
	};

})(jQuery);

/**
* Creates a carousel-style navigation widget for images/any-content from a simple HTML markup.
*
* The HTML markup that is used to build the carousel can be as simple as...
*
*  <div class="carousel">
*      <ul>
*          <li><img src="image/1.jpg" alt="1"></li>
*          <li><img src="image/2.jpg" alt="2"></li>
*          <li><img src="image/3.jpg" alt="3"></li>
*      </ul>
*  </div>
*
* As you can see, this snippet is nothing but a simple div containing an unordered list of images.
* You don't need any special "class" attribute, or a special "css" file for this plugin.
* I am using a class attribute just for the sake of explanation here.
*
* To navigate the elements of the carousel, you need some kind of navigation buttons.
* For example, you will need a "previous" button to go backward, and a "next" button to go forward.
* This need not be part of the carousel "div" itself. It can be any element in your page.
* Lets assume that the following elements in your document can be used as next, and prev buttons...
*
* <button class="prev">&lt;&lt;</button>
* <button class="next">&gt;&gt;</button>
*
* Now, all you need to do is call the carousel component on the div element that represents it, and pass in the
* navigation buttons as options.
*
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev"
* });
*
* That's it, you would have now converted your raw div, into a magnificient carousel.
*
* There are quite a few other options that you can use to customize it though.
* Each will be explained with an example below.
*
* @param an options object - You can specify all the options shown below as an options object param.
*
* @option btnPrev, btnNext : string - no defaults
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev"
* });
* @desc Creates a basic carousel. Clicking "btnPrev" navigates backwards and "btnNext" navigates forward.
*
* @option btnGo - array - no defaults
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      btnGo: [".0", ".1", ".2"]
* });
* @desc If you don't want next and previous buttons for navigation, instead you prefer custom navigation based on
* the item number within the carousel, you can use this option. Just supply an array of selectors for each element
* in the carousel. The index of the array represents the index of the element. What i mean is, if the
* first element in the array is ".0", it means that when the element represented by ".0" is clicked, the carousel
* will slide to the first element and so on and so forth. This feature is very powerful. For example, i made a tabbed
* interface out of it by making my navigation elements styled like tabs in css. As the carousel is capable of holding
* any content, not just images, you can have a very simple tabbed navigation in minutes without using any other plugin.
* The best part is that, the tab will "slide" based on the provided effect. :-)
*
* @option mouseWheel : boolean - default is false
* @example
* $(".carousel").jCarouselLite({
*      mouseWheel: true
* });
* @desc The carousel can also be navigated using the mouse wheel interface of a scroll mouse instead of using buttons.
* To get this feature working, you have to do 2 things. First, you have to include the mouse-wheel plugin from brandon.
* Second, you will have to set the option "mouseWheel" to true. That's it, now you will be able to navigate your carousel
* using the mouse wheel. Using buttons and mouseWheel or not mutually exclusive. You can still have buttons for navigation
* as well. They complement each other. To use both together, just supply the options required for both as shown below.
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      mouseWheel: true
* });
*
* @option auto : number - default is null, meaning autoscroll is disabled by default
* @example
* $(".carousel").jCarouselLite({
*      auto: 800,
*      speed: 500
* });
* @desc You can make your carousel auto-navigate itself by specfying a millisecond value in this option.
* The value you specify is the amount of time between 2 slides. The default is null, and that disables auto scrolling.
* Specify this value and magically your carousel will start auto scrolling.
*
* @option speed : number - 200 is default
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      speed: 800
* });
* @desc Specifying a speed will slow-down or speed-up the sliding speed of your carousel. Try it out with
* different speeds like 800, 600, 1500 etc. Providing 0, will remove the slide effect.
*
* @option easing : string - no easing effects by default.
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      easing: "bounceout"
* });
* @desc You can specify any easing effect. Note: You need easing plugin for that. Once specified,
* the carousel will slide based on the provided easing effect.
*
* @option vertical : boolean - default is false
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      vertical: true
* });
* @desc Determines the direction of the carousel. true, means the carousel will display vertically. The next and
* prev buttons will slide the items vertically as well. The default is false, which means that the carousel will
* display horizontally. The next and prev items will slide the items from left-right in this case.
*
* @option circular : boolean - default is true
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      circular: false
* });
* @desc Setting it to true enables circular navigation. This means, if you click "next" after you reach the last
* element, you will automatically slide to the first element and vice versa. If you set circular to false, then
* if you click on the "next" button after you reach the last element, you will stay in the last element itself
* and similarly for "previous" button and first element.
*
* @option visible : number - default is 3
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      visible: 4
* });
* @desc This specifies the number of items visible at all times within the carousel. The default is 3.
* You are even free to experiment with real numbers. Eg: "3.5" will have 3 items fully visible and the
* last item half visible. This gives you the effect of showing the user that there are more images to the right.
*
* @option start : number - default is 0
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      start: 2
* });
* @desc You can specify from which item the carousel should start. Remember, the first item in the carousel
* has a start of 0, and so on.
*
* @option scrool : number - default is 1
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      scroll: 2
* });
* @desc The number of items that should scroll/slide when you click the next/prev navigation buttons. By
* default, only one item is scrolled, but you may set it to any number. Eg: setting it to "2" will scroll
* 2 items when you click the next or previous buttons.
*
* @option beforeStart, afterEnd : function - callbacks
* @example
* $(".carousel").jCarouselLite({
*      btnNext: ".next",
*      btnPrev: ".prev",
*      beforeStart: function(a) {
*          alert("Before animation starts:" + a);
*      },
*      afterEnd: function(a) {
*          alert("After animation ends:" + a);
*      }
* });
* @desc If you wanted to do some logic in your page before the slide starts and after the slide ends, you can
* register these 2 callbacks. The functions will be passed an argument that represents an array of elements that
* are visible at the time of callback.
*
*
* @cat Plugins/Image Gallery
*/