/*

 * Simple Image Slider

 * Read more at: http://stuff.nekhbet.ro/2009/06/23/simple-image-gallery-navigation-slider-plugin-in-jquery.html

 * Version: 1.0.1

 * Copyright (c) 2009 Trimbitas Sorin-Iulian

 * Free of use (personal and commercial) as long as you keep this header in the file

 * Requires: jQuery v1.3+

*/

;(function($) {



	var totalCount = 0,selector,options,firstPos = 0,isRunning = false;



	$.fn.simple_slider = function(settings) {

		settings = $.extend({}, $.fn.simple_slider.defaults, settings);

		selector = this.selector;

		options = settings;

		//get the number of images

		totalCount = $(selector + " img").size();

		//init

		_init();



		function _init(){

			//hide them all (with the exception of the first X images)

			$(selector + " img").each(function(i){

				if (i >= options.display){

					this.style.display = "none";

				}

			});

			//put actions (onclick) on the buttons for navigation

			//left

			$("#" + options.leftID).click(function (){

				if (isRunning == false){

					_goLeft();

				}

			});

			$("#" + options.leftID).hover(function (){

				$(this).addClass("simple_slider_hover");

				}, function (){

				$(this).removeClass("simple_slider_hover");

			});

			//right

			$("#" + options.rightID).click(function (){ 

				if (isRunning == false){

					_goRight();

				}

			});

			$("#" + options.rightID).hover(function (){

				$(this).addClass("simple_slider_hover");

				}, function (){

				$(this).removeClass("simple_slider_hover");

			});

			$("#" + options.leftID).addClass("simple_slider_disabled");

			_checkNavigation();

		}

		

		function _goLeft(){

			isRunning = true;

			if (firstPos > 0){

				//remove the last one

				$(selector + " img:eq("+ (firstPos + options.display - 1) + ")").fadeOut("normal", function (){

					firstPos--;

					//add one from the beginning

					$(selector + " img:eq("+ (firstPos) +")").fadeIn("normal",function(){

						isRunning = false;

						_checkNavigation();

					});

				});				

			} else {

				isRunning = false;

			}

		}

		

		function _goRight(){

			isRunning = true;

			if (firstPos + options.display < totalCount){

				//remove the first one

				$(selector + " img:eq("+ firstPos +")").fadeOut("normal", function (){

					firstPos++;

					//add one from the end

					$(selector + " img:eq("+ (firstPos + options.display - 1) +")").fadeIn("normal",function(){

						isRunning = false;

						_checkNavigation();

					});

				});				

			} else {

				isRunning = false;

			}

		}

		

		function _checkNavigation(){

			//left

			if (firstPos == 0){

				$("#" + options.leftID).addClass("simple_slider_disabled");

			} else {

				$("#" + options.leftID).removeClass("simple_slider_disabled");

			}

			//right

			if ( (firstPos + options.display) >= totalCount){

				$("#" + options.rightID).addClass("simple_slider_disabled");

			} else {

				$("#" + options.rightID).removeClass("simple_slider_disabled");

			}

		}

		

	}



	$.fn.simple_slider.defaults = {

		display				:	2,

		leftID				:	null,

		rightID				:	null

	};



})(jQuery);