/*
 * Agile Carousel v alpha 1.1
 * http://agilecarousel.com/
 *
 * Copyright 2011, Ed Talmadge
 * Dual licensed under the MIT or GPL Version 2 licenses.
 *
 * 
 */

(function ($) {

	$.fn.agile_carousel = function (options) {

		var defaults = {
			timer: 0,
			continuous_scrolling: false,
			transition_type: "slide",
			transition_time: 600,
			number_slides_visible: 1,
			change_on_hover: "",
			control_set_1: "",
			control_set_2: "",
			control_set_3: "",
			control_set_4: "",
			control_set_5: ""
		};

		options = $.extend(defaults, options);


		return this.each(function () {

			var combined_slide_width = 0;
			var number_of_slides = 0;
			var ac_html = "";
			var ac_content = "";
			var ac_numbered_buttons = "";
			var ac_group_numbered_buttons = "";
			var ac_thumbnails = "";
			var ac_content_buttons = "";
			var ac_pause = "";
			var ac_previous_button = "";
			var ac_next_button = "";
			var ac_hover_previous_button = "";
			var ac_hover_next_button = "";
			var ac_slide_count = "";
			var ac_current_slide_number = "";
			var ac_trigger_type = "ac_click";
			var bd = "";
			var button_type = "";
			var trigger_type = "";
			var button_action = "";
			var go_direct = "";
			var ac_disabled = "";
			var current_slide_number = "";
			var next_slide_number = false;
			var current_slide_index = "";
			var next_slide_index = "";
			var current_slide = "";
			var next_slide = "";
			var continuous_scrolling = options.continuous_scrolling;
			var carousel_outer_width = options.carousel_outer_width;
			var carousel_outer_height = options.carousel_outer_height;
			var carousel_data = options.carousel_data;
			var change_on_hover = options.change_on_hover;
			var slide_width = options.slide_width;
			var slide_height = options.slide_height;
			var control_set_1 = options.control_set_1;
			var control_set_2 = options.control_set_2;
			var control_set_3 = options.control_set_3;
			var control_set_4 = options.control_set_4;
			var control_set_5 = options.control_set_5;
			var no_control_set = options.no_control_set;
			var persistent_content = options.persistent_content;
			var number_slides_visible = options.number_slides_visible;
			var transition_type = options.transition_type;
			var transition_time = options.transition_time;
			var timer = options.timer;
			var content = "";
			var obj_inner = "";
			var content_button = "";
			var $this = "";
			var timer_data = "";
			var ac_timer = "";

			// get the number of slides
			$.each(carousel_data, function (key, value) {
				number_of_slides++;
			});

			var slide_remainder = number_of_slides % number_slides_visible;

			var slide_number_conversion_array = [];
			var new_num = "";

			function get_trigger_type(check_me) {
				if (change_on_hover !== "") {
					ac_trigger_type = "ac_click";
					var change_on_hover_array = change_on_hover.split(",");
					if ($.inArray(check_me, change_on_hover_array) != -1) {
						ac_trigger_type = "ac_hover";
					}
				}
				return ac_trigger_type;
			} // function

			////////////////////////
			// Group Numbered Buttons
			//////////////////////// 

			var j = 0;
			var i = 0;
			for (i = 0; i < number_of_slides; i++) {

				if (i === 0) {
					ac_group_numbered_buttons += "<div class='group_numbered_buttons_container button_container'>";
				} // if
				var curr_num = Math.floor((i + 1) / number_slides_visible) * number_slides_visible + 1;
				if (curr_num !== new_num && curr_num <= number_of_slides) {
					slide_number_conversion_array[j] = curr_num;

					ac_group_numbered_buttons += "<div class='slide_number_" + curr_num + " group_numbered_button slide_button " + get_trigger_type("group_numbered_buttons") + "' data-options='{\"button_type\":\"group_numbered_button\",\"button_action\":\"direct\",\"go_to\":" + curr_num + ", \"trigger_type\":\"" + ac_trigger_type + "\",\"disabled\": false}'>" + (j + 1) + "</div>";

					new_num = curr_num;
					
					j++;
				}

				if (i === number_of_slides - 1) {
					ac_group_numbered_buttons += "</div>";
				}

			} // for
			////////////////////////
			// Pause Button
			//////////////////////// 
			ac_pause += "<span class='pause_button slide_button pause' data-options='{\"button_type\":\"pause_button\",\"trigger_type\": \"none\",\"disabled\": false,\"paused\": false}'>Pause</span>";

			////////////////////////
			// Previous Button
			//////////////////////// 
			ac_previous_button += "<span class='previous_next_button previous_button slide_button " + get_trigger_type("previous_button") + "' data-options='{\"button_type\":\"previous_button\",\"button_action\":\"previous\",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'>Prev</span>";

			////////////////////////
			// Next Button
			//////////////////////// 
			ac_next_button += "<span class='previous_next_button next_button slide_button " + get_trigger_type("next_button") + "' data-options='{\"button_type\":\"next_button\",\"button_action\":\"next\",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'>Next</span>";

			////////////////////////
			// Hover Previous Button
			//////////////////////// 
			ac_hover_previous_button += "<div class='hover_previous_next_button hover_previous_button slide_button " + get_trigger_type("hover_previous_button") + "' data-options='{\"button_type\":\"hover_previous_button\",\"button_action\":\"previous\",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'><span style='opacity: 0;' class='hover_previous_next_button_inner'>Prev</span></div>";

			////////////////////////
			// Hover Next Button
			//////////////////////// 
			ac_hover_next_button += "<div class='hover_previous_next_button hover_next_button slide_button " + get_trigger_type("hover_next_button") + "' data-options='{\"button_type\":\"hover_next_button\",\"button_action\":\"next\",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'><span style='opacity: 0;' class='hover_previous_next_button_inner'>Next</span></div>";

			////////////////////////
			// Slide Count
			//////////////////////// 
			ac_slide_count += "<span class='slide_count'>" + number_of_slides + "</span>";

			////////////////////////
			// Current Slide Number
			//////////////////////// 
			ac_current_slide_number += "<span class='current_slide_number'>1</span>";

			// render beginning of div containers
			ac_html += "<div class='agile_carousel' style='overflow: hidden; position: relative; width: " + carousel_outer_width + "px; height: " + carousel_outer_height + "px;'>";

			var obj = $(this);
			i = 1;
			for (var key in carousel_data) {

				if (carousel_data.hasOwnProperty(key)) {


					obj_inner = carousel_data[key];
					content = obj_inner.content;
					var thumbnail_button = obj_inner.thumbnail_button;
					content_button = obj_inner.content_button;


					////////////////////////
					// Slides
					////////////////////////


					if (i === 1) {
						ac_html += "<div class='slides' style='width: " + slide_width * number_of_slides + "px; height: " + slide_height + "px;'>";
					} // if
					if (content) {
						// render
						ac_html += "<div class='slide_" + i + " slide' style='border: none; margin: 0; padding: 0; height: " + slide_height + "px; width: " + slide_width + "px;'>" + content + "</div>";
					} // if obj_inner.content
					if (i === number_of_slides) {
						ac_html += "</div>";
					}


					////////////////////////
					// Numbered Buttons
					////////////////////////
					if (i == 1) {
						ac_numbered_buttons += "<div class='numbered_buttons_container  button_container'>";
					} // if
					ac_numbered_buttons += "<div class='slide_number_" + i + " numbered_button slide_button " + get_trigger_type("numbered_buttons") + "' data-options='{\"button_type\":\"numbered_button\",\"button_action\":\"direct\",\"go_to\":" + i + ", \"trigger_type\":\"" + ac_trigger_type + "\",\"disabled\": false}'>" + i + "</div>";

					if (i == number_of_slides) {
						ac_numbered_buttons += "</div>";
					}



					////////////////////////
					// Thumbnails
					////////////////////////						
					if (thumbnail_button) {

						if (i == 1) {
							ac_thumbnails += "<div class='thumbnail_buttons_container  button_container'>";
						} // if
						ac_thumbnails += "<div class='slide_number_" + i + " thumbnail_button slide_button " + get_trigger_type("thumbnails") + "'  data-options='{\"button_type\":\"thumbnail_button\",\"button_action\":\"direct\",\"go_to\":" + i + ",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'>" + thumbnail_button + "</div>";

						if (i == number_of_slides) {
							ac_thumbnails += "</div>";
						} // if

					} // if

					////////////////////////
					// Content Button
					////////////////////////
					if (content_button) {

						if (i == 1) {
							ac_content_buttons += "<div class='content_buttons_container  button_container'>";
						} // if
						ac_content_buttons += "<div class='slide_number_" + i + " content_button_" + i + " content_button slide_button " + get_trigger_type("content_buttons") + "' data-options='{\"button_type\":\"content_button\",\"button_action\":\"direct\",\"go_to\":" + i + ",\"trigger_type\": \"" + ac_trigger_type + "\",\"disabled\": false}'><div class='content_button_inner'>" + content_button + "</div></div>";

						if (i == number_of_slides) {
							ac_content_buttons += "</div>";
						} // if
					}

					i++;


				} // if has own property
			} // for
			var create_control_set = function (set, set_number) {
				var control_set_html = "";
				if (set !== "") {
					if (set_number) {
						control_set_html += "<div class='control_set_" + set_number + " control_set'><div class='control_set_" + set_number + "_inner control_set_inner'>";
					}

					var control_set_array = set.split(",");

					for (j = 0; j < control_set_array.length; j++) {

						// numbered_buttons
						if (control_set_array[j] == "numbered_buttons") {
							control_set_html += ac_numbered_buttons;
						}

						// group_numbered_buttons
						if (control_set_array[j] == "group_numbered_buttons") {
							control_set_html += ac_group_numbered_buttons;
						}

						// thumbnails
						if (control_set_array[j] == "thumbnails") {
							control_set_html += ac_thumbnails;
						}
						// content_buttons
						if (control_set_array[j] == "content_buttons") {
							control_set_html += ac_content_buttons;
						}
						// pause_button
						if (control_set_array[j] == "pause_button") {
							control_set_html += ac_pause;
						}
						// previous_button
						if (control_set_array[j] == "previous_button") {
							control_set_html += ac_previous_button;
						}
						// previous_button
						if (control_set_array[j] == "next_button") {
							control_set_html += ac_next_button;
						}
						// hover_previous_button
						if (control_set_array[j] == "hover_previous_button") {
							control_set_html += ac_hover_previous_button;
						}
						// hover_next_button
						if (control_set_array[j] == "hover_next_button") {
							control_set_html += ac_hover_next_button;
						}
						// slide_count
						if (control_set_array[j] == "slide_count") {
							control_set_html += ac_slide_count;
						}
						// current_slide_number
						if (control_set_array[j] == "current_slide_number") {
							control_set_html += ac_current_slide_number;
						}

					} // for

					if (set_number) {
						control_set_html += "</div></div>";
					}

					ac_html += control_set_html;

				} // if
			}; // function


			if (options.control_set_1) {
				create_control_set(control_set_1, 1);
			} // if
			if (options.control_set_2) {
				create_control_set(control_set_2, 2);
			} // if
			if (options.control_set_3) {
				create_control_set(control_set_3, 3);
			} // if
			if (options.control_set_4) {
				create_control_set(control_set_4, 4);
			} // if
			if (options.control_set_5) {
				create_control_set(control_set_5, 5);
			} // if
			if (options.no_control_set) {
				create_control_set(no_control_set);
			} // if
			if (persistent_content) {
				ac_html += persistent_content;
			}

			ac_html += "</div>";

			obj.html(ac_html);

			var ac_slides = obj.find(".slide");
			var ac_slides_container = obj.find(".slides");
			var ac_slide_buttons = obj.find(".slide_button");
			var ac_slide_buttons_length = ac_slide_buttons.length;
			var agile_carousel = obj.find(".agile_carousel");

			var ac_previous_buttons = obj.find(".previous_button, .hover_previous_button");
			var ac_previous_buttons_length = ac_previous_buttons.length;
			var ac_next_buttons = obj.find(".next_button, .hover_next_button");

			// kludge - above variables not working in disable_buttons function - disabled is undefined in disable_buttons function
			var previous_button = obj.find(".previous_button");
			var previous_button_length = previous_button.length;
			var hover_previous_button = obj.find(".hover_previous_button");
			var hover_previous_button_length = hover_previous_button.length;
			var next_button = obj.find(".next_button");
			var next_button_length = next_button.length;
			var hover_next_button = obj.find(".hover_next_button");
			var hover_next_button_length = hover_next_button.length;

			
			function disable_buttons(slide_num) {

				if (continuous_scrolling === false && number_slides_visible < 2) {

					// if first slide
					if (slide_num == 1) {
						if (previous_button_length > 0) {
							previous_button.addClass("ac_disabled");
							previous_button.data("options").disabled = true;
						} // if
						// error
						if (hover_previous_button_length > 0) {
							hover_previous_button.addClass("ac_disabled");
							hover_previous_button.data("options").disabled = true;
						} // if
					} else {
						if (previous_button_length > 0) {
							previous_button.removeClass("ac_disabled");
							previous_button.data("options").disabled = false;
						} // if
						if (hover_previous_button_length > 0) {
							hover_previous_button.removeClass("ac_disabled");
							hover_previous_button.data("options").disabled = false;
						} // if
					}

					// if last slide
					if (slide_num == number_of_slides) {
						if (next_button_length > 0) {
							next_button.addClass("ac_disabled");
							next_button.data("options").disabled = true;
						} // if
						if (hover_next_button_length > 0) {
							hover_next_button.addClass("ac_disabled");
							hover_next_button.data("options").disabled = true;
						} // if
					} else {
						if (next_button_length > 0) {
							next_button.removeClass("ac_disabled");
							next_button.data("options").disabled = false;
						} // if
						if (hover_next_button_length > 0) {
							hover_next_button.removeClass("ac_disabled");
							hover_next_button.data("options").disabled = false;
						} // if
					}

				} // if
				
				if (continuous_scrolling === false && number_slides_visible > 1) {

					// if first slide
					if (slide_num <= number_slides_visible) {
						if (previous_button_length > 0) {
							previous_button.addClass("ac_disabled");
							previous_button.data("options").disabled = true;
						} // if
						if (hover_previous_button_length > 0) {
							hover_previous_button.addClass("ac_disabled");
							hover_previous_button.data("options").disabled = true;
						} // if
					} else {
						if (previous_button_length > 0) {
							previous_button.removeClass("ac_disabled");
							previous_button.data("options").disabled = false;
						} // if
						if (hover_previous_button_length > 0) {
							hover_previous_button.removeClass("ac_disabled");
							hover_previous_button.data("options").disabled = false;
						} // if
					}

					// if last slide
					if (slide_num >= (number_of_slides - number_slides_visible + slide_remainder)) {
						if (next_button_length > 0) {
							next_button.addClass("ac_disabled");
							next_button.data("options").disabled = true;
						} // if
						if (hover_next_button_length > 0) {
							hover_next_button.addClass("ac_disabled");
							hover_next_button.data("options").disabled = true;
						} // if
					} else {
						if (next_button_length > 0) {
							next_button.removeClass("ac_disabled");
							next_button.data("options").disabled = false;
						} // if
						if (hover_next_button_length > 0) {
							hover_next_button.removeClass("ac_disabled");
							hover_next_button.data("options").disabled = false;
						} // if
					}

				} // if

			} // function

			var current_slide_number_display = obj.find(".current_slide_number");
			var current_slide_number_display_length = current_slide_number_display.length;

			// update slide number

			function update_current_slide_number(slide_num) {
				if (current_slide_number_display_length > 0) {
					current_slide_number_display.html(slide_num);
				}
			}

			// add/remove class for buttons corresponding to selected slides


			function add_selected_class(slide_num) {
				obj.find(".ac_selected").removeClass("ac_selected");
				obj.find(".slide_number_" + slide_num).addClass("ac_selected");
			}
			
			// prepare carousel for number_slides_visible = 1
			if (number_slides_visible == 1) {
				ac_slides.eq(0).css({
					"position": "absolute",
					"top": 0,
					"left": 0
				});
				ac_slides.slice(1, number_of_slides).css({
					"position": "absolute",
					"top": "-5000px",
					"left": 0
				});
				ac_slides_container.css("width", slide_width + "px");

			}

			// prepare carousel for number_slides_visible > 1
			if (number_slides_visible > 1) {

				agile_carousel.css("width", number_slides_visible * slide_width + "px");

				var k = 0;

				for (k = 1; k <= number_of_slides; k++) {

					ac_slides.eq(k).css({
						"position": "absolute",
						"top": 0,
						"left": slide_width * k + "px"

					});
				} // for
			} // if

			var fade_complete = function () {
				current_slide.css({
					"z-index": 10,
					top: -5000
				});
			};

			var slide_complete = function () {
				current_slide.css({
					"position": "absolute",
					"top": "-5000px",
					"left": 0
				});
			};


			// prepare carousel for all
			disable_buttons(1);
			update_current_slide_number(1);
			add_selected_class(1);

			// if a hoveer transition button is hovered over for 1 seconds, then simulate click
			button_type = bd.button_type;
			current_slide_number = 1;


			var slide_number_conversion_array_last = slide_number_conversion_array[slide_number_conversion_array.length - 1];

			///////////////////////////////
			///////////////////////////////
			///////// Transition Slides
			///////////////////////////////
			///////////////////////////////

			function transition_slides(button_data) {

				bd = $(button_data)[0];
				var ac_disabled = bd.disabled;

				if (ac_disabled !== true) {

					button_type = bd.button_type;
					trigger_type = bd.trigger_type;
					button_action = bd.button_action;
					var go_to = bd.go_to;
					ac_disabled = bd.disabled;

					if (next_slide_number !== false) {
						current_slide_number = next_slide_number;
					}


					current_slide_index = current_slide_number - 1;
					current_slide = $(ac_slides).eq(current_slide_index);


					// calculate the next_slide_number
					///////////////////////////
					///////////////////////////
					////// One Slide Visible
					///////////////////////////
					///////////////////////////
					if (number_slides_visible < 2) {
						if (button_action == "next" && current_slide_number < number_of_slides) {
							next_slide_number = current_slide_number + 1;
						} else if (button_action == "next" && current_slide_number == number_of_slides) {
							next_slide_number = 1;
						}


						// go back
						if (button_action == "previous" && current_slide_number > 1) {
							next_slide_number = current_slide_number - 1;

							// go to last slide position
						} else if (button_action == "previous" && current_slide_number == 1) {
							next_slide_number = number_of_slides;
						}

					} // if
					///////////////////////////
					///////////////////////////
					////// Multiple Slides Visible
					///////////////////////////
					///////////////////////////
					if (number_slides_visible > 1) {


						if (button_action == "next" && current_slide_number < (number_of_slides - number_slides_visible + slide_remainder)) {

							next_slide_number = slide_number_conversion_array[Math.ceil(current_slide_number / number_slides_visible)];


						} else if (button_action == "next" && current_slide_number >= (number_of_slides - number_slides_visible + slide_remainder) && number_slides_visible > 1) {
							next_slide_number = 1;

						}

						// go back
						if (button_action == "previous" && current_slide_number > number_slides_visible && number_slides_visible > 1) {
							var curr_lookup = Math.floor(current_slide_number / number_slides_visible);
							curr_lookup = curr_lookup - 1;
							next_slide_number = slide_number_conversion_array[curr_lookup];

							// go to last slide position
						} else if (button_action == "previous" && current_slide_number <= number_slides_visible && number_slides_visible > 1) {
							next_slide_number = slide_number_conversion_array_last;
						}

					} // if
					if (button_action == "direct") {
						next_slide_number = go_to;
					}


					next_slide_index = next_slide_number - 1;
					next_slide = $(ac_slides).eq(next_slide_index);

					add_selected_class(next_slide_number);
					update_current_slide_number(next_slide_number);


					if (next_slide_index != current_slide_index) {


						/////////////////////////////////
						/////////////////////////////////
						///// Sliding Transition - more than one slide visible
						/////////////////////////////////
						/////////////////////////////////
						if (transition_type == "slide" && number_slides_visible > 1) {


							ac_slides_container.stop().animate({
								"left": ((next_slide_number * slide_width) - slide_width) * -1 + "px"
							}, {
								duration: transition_time
							});



						} // if

						/////////////////////////////////
						/////////////////////////////////
						///// Sliding Transition - 1 slide visible
						/////////////////////////////////
						/////////////////////////////////
						if (transition_type == "slide" && number_slides_visible == 1) {

							// change slide position - go forward
							var animate_current_slide_to = "";

							if (button_action == "next" || (next_slide_number > current_slide_number) && button_action == "direct") {
								next_slide.css({
									top: 0,
									left: slide_width
								});

								animate_current_slide_to = slide_width * -1;

							}

							// change slide position - go back
							if (button_action == "previous" || (next_slide_number < current_slide_number && button_action == "direct")) {
								next_slide.css({
									top: 0,
									left: slide_width * -1
								});

								animate_current_slide_to = slide_width;
							}

							// animate slides


							//,{  duration:300, complete: fade_complete}
							current_slide.stop().animate({
								"left": animate_current_slide_to + "px"
							}, {
								duration: transition_time,
								complete: slide_complete
							});
							next_slide.stop().animate({
								"left": "0px"
							}, {
								duration: transition_time
							});
							
						} // if transition type is slide										


						/////////////////////////////////
						/////////////////////////////////
						///// Fade Transition - 1 slide visible
						/////////////////////////////////
						/////////////////////////////////
						if (transition_type == "fade" && number_slides_visible == 1) {

							//if(trigger_type == "ac_hover"){
							//ac_slides.stop();
							//}
							// change slide position
							// rest of the slides 
							ac_slides.not(current_slide, next_slide).css({
								"top": "-5000px",
								"left": 0,
								"z-index": 0,
								"opacity": 0
							});

							// next slide
							if (button_action) {
								next_slide.css({
									"top": 0,
									"left": 0,
									"z-index": 20
								});

								// current slide
								current_slide.css({
									"z-index": 10,
									"opacity": 1
								});


							} // if
							// animate slides
							next_slide.stop().animate({
								"opacity": 1
							}, {
								duration: transition_time,
								complete: fade_complete
							});



						} // if transition type is slide	
					} // if current slide is not the next slide
				} // if slide button is not disabled && transition complete

				disable_buttons(next_slide_number);
				add_selected_class(next_slide_number);

			} // transition_slides;
			



			/////////////////////
			///////// button behavior
			////////////////////
			
			
			var agile_carousel_buttons_click = obj.find(".ac_click");
			var agile_carousel_buttons_hover = obj.find(".ac_hover");
			
			// start timer
			if(timer !== 0){
				ac_timer = setInterval(timer_transition, timer);
			}

			var pause_button = obj.find(".pause_button");

			function pause_slideshow() {

				if(pause_button.length > 0){
					pause_button.html("play");
			   		pause_button.data("options").paused = true;
					pause_button.addClass("play_button");
				}
				clearInterval(ac_timer);
			} // function


			/////////////////
			//////// click button
			////////////////
		
			 $(agile_carousel_buttons_click).click(function(){
				 pause_slideshow();
				if(obj.find(':animated').length < 1){
					transition_slides($(this).data().options);
				} else {
					$this = $(this);
					// don't use timer on next & previous buttons... causes strage, infinite cycle
					if($this.data("options").button_action != "next" && $this.data("options").button_action != "previous") {
							function check_transition(){
									
									if(ac_slides_container.find(':animated').length < 1){
										transition_slides($this.data().options);
										clearInterval($this.data("options").timeout);
									} // if
								} // function
								
							t = setInterval(check_transition,30);	
								
							$this.data("options").timeout = t;
					}// if
				} // else
			
			}); // click
			
			
			/////////////////
			//////// hover button
			////////////////
			
			$(agile_carousel_buttons_hover).hover(function() {
				pause_slideshow();
				if(ac_slides_container.find(':animated').length < 1){
					transition_slides($(this).data().options);

				} else {
						$this = $(this);
						
						function check_transition(){
								
								if(ac_slides_container.find(':animated').length < 1){
									transition_slides($this.data().options);
									clearInterval($this.data("options").timeout);
								} // if
							} // function
							
						t = setInterval(check_transition,30);	
							
						$this.data("options").timeout = t;
					
					} // else
				
				}, function() {
					$this = $(this);
					clearInterval($this.data("options").timeout);
			});


			////////////////////////////
			////////////////////////////
			//////// Timer
			////////////////////////////
			////////////////////////////


			 timer_data = {
				"button_action": "next",
				"button_type": "pause",
				"disabled": false,
				"trigger_type": "ac_click"
			};

			
			function timer_transition() {
				transition_slides(timer_data);
			}

		   

			function play_slideshow() {
				clearInterval(ac_timer);
				pause_button.html("pause");
				pause_button.data("options").paused = false;
				pause_button.addClass("pause_button");
				pause_button.removeClass("play_button");
				transition_slides(timer_data);
				ac_timer = setInterval(timer_transition, timer);
				return ac_timer;
			} // function
			// play/pause button behavior
			pause_button.click(function () {
				var $this = $(this);
				if ($this.data("options").paused === true) {
					play_slideshow();

				} else if ($this.data("options").paused === false) {
					pause_slideshow();
					clearInterval(ac_timer);
				}
			}); // click

			// hover previous and hover next buttons
			
			$('.hover_previous_next_button').hover(function() {
				$(this).find(".hover_previous_next_button_inner").stop().fadeTo("fast", 0.85);
			},
			// function
			function() {
				$(this).find(".hover_previous_next_button_inner").stop().fadeTo("fast", 0.00);
			}); // hover

		}); // each
	}; // function
})(jQuery);