/*
* slides, a slideshow plugin for jquery
* intructions: http://slidesjs.com
* by: nathan searles, http://nathansearles.com
* version: 1.1.9
* updated: september 5th, 2011
*
* licensed under the apache license, version 2.0 (the "license");
* you may not use this file except in compliance with the license.
* you may obtain a copy of the license at
*
* http://www.apache.org/licenses/license-2.0
*
* unless required by applicable law or agreed to in writing, software
* distributed under the license is distributed on an "as is" basis,
* without warranties or conditions of any kind, either express or implied.
* see the license for the specific language governing permissions and
* limitations under the license.
*/
(function($){
	var banner_bg = new array("aa","bb","cc","dd");
	$.fn.slides = function( option ) {
		// override defaults with specified option
		option = $.extend( {}, $.fn.slides.option, option );

		return this.each(function(){
			// wrap slides in control container, make sure slides are block level
			$('.' + option.container, $(this)).children().wrapall('<div class="slides_control"/>');
			
			var elem = $(this),
				control = $('.slides_control',elem),
				total = control.children().size(),
				width = control.children().outerwidth(),
				height = control.children().outerheight(),
				start = option.start - 1,
				effect = option.effect.indexof(',') < 0 ? option.effect : option.effect.replace(' ', '').split(',')[0],
				paginationeffect = option.effect.indexof(',') < 0 ? effect : option.effect.replace(' ', '').split(',')[1],
				next = 0, prev = 0, number = 0, current = 0, loaded, active, clicked, position, direction, imageparent, pausetimeout, playinterval;
			
			// is there only one slide?
			if (total < 2) {
				// fade in .slides_container
				$('.' + option.container, $(this)).fadein(option.fadespeed, option.fadeeasing, function(){
					// let the script know everything is loaded
					loaded = true;
					// call the loaded funciton
					option.slidesloaded();
				});
				// hide the next/previous buttons
				$('.' + option.next + ', .' + option.prev).fadeout(0);
				return false;
			}

			// animate slides
			function animate(direction, effect, clicked) {
				if (!active && loaded) {
					active = true;
					// start of animation
					option.animationstart(current + 1);
					switch(direction) {
						case 'next':
							// change current slide to previous
							prev = current;
							// get next from current + 1
							next = current + 1;
							// if last slide, set next to first slide
							next = total === next ? 0 : next;
							// set position of next slide to right of previous
							position = width*2;
							// distance to slide based on width of slides
							direction = -width*2;
							// store new current slide
							current = next;
							if($("#banner_pic_"+(current+1)).find("img").length > 0)
							{
								$("#mainbody").removeclass();
								//鏍规嵁banner鐨勫悕绉拌嚜鍔ㄥ搴旇儗鏅牱寮?								var banner_src = $("#banner_pic_"+(current+1)).find("img").attr("src");
								var banner_index = banner_src.indexof(".");
								var banner_index_bg = banner_src.substring(banner_index-2,banner_index);
								$("#mainbody").addclass("index_bg"+banner_index_bg);
								//$("#mainbody").addclass("index_bg0"+(current+1));
							}
						break;
						case 'prev':
							// change current slide to previous
							prev = current;
							// get next from current - 1
							next = current - 1;
							// if first slide, set next to last slide
							next = next === -1 ? total-1 : next;								
							// set position of next slide to left of previous
							position = 0;								
							// distance to slide based on width of slides
							direction = 0;		
							// store new current slide
							current = next;
							if($("#banner_pic_"+(current+1)).find("img").length > 0)
							{
								$("#mainbody").removeclass();
								//鏍规嵁banner鐨勫悕绉拌嚜鍔ㄥ搴旇儗鏅牱寮?								var banner_src = $("#banner_pic_"+(current+1)).find("img").attr("src");
								var banner_index = banner_src.indexof(".");
								var banner_index_bg = banner_src.substring(banner_index-2,banner_index);
								$("#mainbody").addclass("index_bg"+banner_index_bg);
								//$("#mainbody").addclass("index_bg0"+(current+1));
							}
						break;
						case 'pagination':
							// get next from pagination item clicked, convert to number
							next = parseint(clicked,10);
							// get previous from pagination item with class of current
							prev = $('.' + option.paginationclass + ' li.'+ option.currentclass +' a', elem).attr('href').match('[^#/]+$');
							// if next is greater then previous set position of next slide to right of previous
							if (next > prev) {
								position = width*2;
								direction = -width*2;
							} else {
							// if next is less then previous set position of next slide to left of previous
								position = 0;
								direction = 0;
							}
							// store new current slide
							current = next;
							if($("#banner_pic_"+(current+1)).find("img").length > 0)
							{
								$("#mainbody").removeclass();
								//鏍规嵁banner鐨勫悕绉拌嚜鍔ㄥ搴旇儗鏅牱寮?								var banner_src = $("#banner_pic_"+(current+1)).find("img").attr("src");
								var banner_index = banner_src.indexof(".");
								var banner_index_bg = banner_src.substring(banner_index-2,banner_index);
								$("#mainbody").addclass("index_bg"+banner_index_bg);
								//$("#mainbody").addclass("index_bg0"+(current+1));
							}
						break;
					}

					// fade animation
					if (effect === 'fade') {
						// fade animation with crossfade
						if (option.crossfade) {
							// put hidden next above current
							control.children(':eq('+ next +')', elem).css({
								zindex: 10
							// fade in next
							}).fadein(option.fadespeed, option.fadeeasing, function(){
								if (option.autoheight) {
									// animate container to height of next
									control.animate({
										height: control.children(':eq('+ next +')', elem).outerheight()
									}, option.autoheightspeed, function(){
										// hide previous
										control.children(':eq('+ prev +')', elem).css({
											display: 'none',
											zindex: 0
										});								
										// reset z index
										control.children(':eq('+ next +')', elem).css({
											zindex: 0
										});									
										// end of animation
										option.animationcomplete(next + 1);
										active = false;
									});
								} else {
									// hide previous
									control.children(':eq('+ prev +')', elem).css({
										display: 'none',
										zindex: 0
									});									
									// reset zindex
									control.children(':eq('+ next +')', elem).css({
										zindex: 0
									});									
									// end of animation
									option.animationcomplete(next + 1);
									active = false;
								}
							});
						} else {
							// fade animation with no crossfade
							control.children(':eq('+ prev +')', elem).fadeout(option.fadespeed,  option.fadeeasing, function(){
								// animate to new height
								if (option.autoheight) {
									control.animate({
										// animate container to height of next
										height: control.children(':eq('+ next +')', elem).outerheight()
									}, option.autoheightspeed,
									// fade in next slide
									function(){
										control.children(':eq('+ next +')', elem).fadein(option.fadespeed, option.fadeeasing);
									});
								} else {
								// if fixed height
									control.children(':eq('+ next +')', elem).fadein(option.fadespeed, option.fadeeasing, function(){
										// fix font rendering in ie, lame
										if($.browser.msie) {
											$(this).get(0).style.removeattribute('filter');
										}
									});
								}									
								// end of animation
								option.animationcomplete(next + 1);
								active = false;
							});
						}
					// slide animation
					} else {
						// move next slide to right of previous
						control.children(':eq('+ next +')').css({
							left: position,
							display: 'block'
						});
						// animate to new height
						if (option.autoheight) {
							control.animate({
								left: direction,
								height: control.children(':eq('+ next +')').outerheight()
							},option.slidespeed, option.slideeasing, function(){
								control.css({
									left: -width
								});
								control.children(':eq('+ next +')').css({
									left: width,
									zindex: 5
								});
								// reset previous slide
								control.children(':eq('+ prev +')').css({
									left: width,
									display: 'none',
									zindex: 0
								});
								// end of animation
								option.animationcomplete(next + 1);
								active = false;
							});
							// if fixed height
							} else {
								// animate control
								control.animate({
									left: direction
								},option.slidespeed, option.slideeasing, function(){
									// after animation reset control position
									control.css({
										left: -width
									});
									// reset and show next
									control.children(':eq('+ next +')').css({
										left: width,
										zindex: 5
									});
									// reset previous slide
									control.children(':eq('+ prev +')').css({
										left: width,
										display: 'none',
										zindex: 0
									});
									// end of animation
									option.animationcomplete(next + 1);
									active = false;
								});
							}
						}
					// set current state for pagination
					if (option.pagination) {
						// remove current class from all
						$('.'+ option.paginationclass +' li.' + option.currentclass, elem).removeclass(option.currentclass);
						// add current class to next
						$('.' + option.paginationclass + ' li:eq('+ next +')', elem).addclass(option.currentclass);
					}
				}
			} // end animate function
			
			function stop() {
				// clear interval from stored id
				clearinterval(elem.data('interval'));
			}

			function pause() {
				if (option.pause) {
					// clear timeout and interval
					cleartimeout(elem.data('pause'));
					clearinterval(elem.data('interval'));
					// pause slide show for option.pause amount
					pausetimeout = settimeout(function() {
						// clear pause timeout
						cleartimeout(elem.data('pause'));
						// start play interval after pause
						playinterval = setinterval(	function(){
							animate("next", effect);
						},option.play);
						// store play interval
						elem.data('interval',playinterval);
					},option.pause);
					// store pause interval
					elem.data('pause',pausetimeout);
				} else {
					// if no pause, just stop
					stop();
				}
			}
				
			// 2 or more slides required
			if (total < 2) {
				return;
			}
			
			// error corection for start slide
			if (start < 0) {
				start = 0;
			}
			
			if (start > total) {
				start = total - 1;
			}
					
			// change current based on start option number
			if (option.start) {
				current = start;
			}
				
			// randomizes slide order
			if (option.randomize) {
				control.randomize();
			}
			// make sure overflow is hidden, width is set
			$('.' + option.container, elem).css({
				overflow: 'hidden',
				// fix for ie
				position: 'relative'
			});
			
			// set css for slides
			control.children().css({
				position: 'absolute',
				top: 0, 
				left: control.children().outerwidth(),
				zindex: 0,
				display: 'none'
			 });
			
			// set css for control div
			control.css({
				position: 'relative',
				// size of control 3 x slide width
				width: (width * 3),
				// set height to slide height
				height: height,
				// center control to slide
				left: -width
			});
			// show slides
			$('.' + option.container, elem).css({
				display: 'block'
			});

			// if autoheight true, get and set height of first slide
			if (option.autoheight) {
				control.children().css({
					height: 'auto'
				});
				control.animate({
					height: control.children(':eq('+ start +')').outerheight()
				},option.autoheightspeed);
			}
			
			// checks if image is loaded
			if (option.preload && control.find('img:eq(' + start + ')').length) {
				// adds preload image
				$('.' + option.container, elem).css({
					background: 'url(' + option.preloadimage + ') no-repeat 50% 50%'
				});
				
				// gets image src, with cache buster
				var img = control.find('img:eq(' + start + ')').attr('src') + '?' + (new date()).gettime();
				
				// check if the image has a parent
				if ($('img', elem).parent().attr('class') != 'slides_control') {
					// if image has parent, get tag name
					imageparent = control.children(':eq(0)')[0].tagname.tolowercase();
				} else {
					// image doesn't have parent, use image tag name
					imageparent = control.find('img:eq(' + start + ')');
				}

				// checks if image is loaded
				control.find('img:eq(' + start + ')').attr('src', img).load(function() {
					// once image is fully loaded, fade in
					control.find(imageparent + ':eq(' + start + ')').fadein(option.fadespeed, option.fadeeasing, function(){
						$(this).css({
							zindex: 5
						});
						// removes preload image
						$('.' + option.container, elem).css({
							background: ''
						});
						// let the script know everything is loaded
						loaded = true;
						// call the loaded funciton
						option.slidesloaded();
					});
				});
			} else {
				// if no preloader fade in start slide
				control.children(':eq(' + start + ')').fadein(option.fadespeed, option.fadeeasing, function(){
					// let the script know everything is loaded
					loaded = true;
					// call the loaded funciton
					option.slidesloaded();
				});
			}
			
			// click slide for next
			if (option.bigtarget) {
				// set cursor to pointer
				control.children().css({
					cursor: 'pointer'
				});
				// click handler
				control.children().click(function(){
					// animate to next on slide click
					animate('next', effect);
					return false;
				});									
			}
			
			// pause on mouseover
			if (option.hoverpause && option.play) {
				control.bind('mouseover',function(){
					// on mouse over stop
					stop();
				});
				control.bind('mouseleave',function(){
					// on mouse leave start pause timeout
					pause();
				});
			}
			
			// generate next/prev buttons
			if (option.generatenextprev) {
				$('.' + option.container, elem).after('<a href="#" class="'+ option.prev +'">prev</a>');
				$('.' + option.prev, elem).after('<a href="#" class="'+ option.next +'">next</a>');
			}
			
			// next button
			$('.' + option.next ,elem).click(function(e){
				e.preventdefault();
				if (option.play) {
					pause();
				}
				animate('next', effect);
			});
			
			// previous button
			$('.' + option.prev, elem).click(function(e){
				e.preventdefault();
				if (option.play) {
					 pause();
				}
				animate('prev', effect);
			});
			
			// generate pagination
			if (option.generatepagination) {
				// create unordered list
				if(option.container == 'slides_container')
				{
					if (option.prependpagination) {
						//elem.prepend('<ul class='+ option.paginationclass +'></ul>');
						elem.children('.bannerimg').prepend('<div class="bannerpage"><ul class='+ option.paginationclass +'></ul></div>');
					} else {
						//elem.append('<ul class='+ option.paginationclass +'></ul>');
						elem.children('.bannerimg').append("<div class='bannerpage'><ul class="+ option.paginationclass +"></ul></div>");
					}
				}
				else
				{
					if (option.prependpagination) {
						//elem.prepend('<ul class='+ option.paginationclass +'></ul>');
						elem.children('.bannerimg2').prepend('<div class="bannerpage"><ul class='+ option.paginationclass +'></ul></div>');
					} else {
						//elem.append('<ul class='+ option.paginationclass +'></ul>');
						elem.children('.bannerimg2').append("<div class='bannerpage'><ul class="+ option.paginationclass +"></ul></div>");
					}

				}
				// for each slide create a list item and link
				control.children().each(function(){
					$('.' + option.paginationclass, elem).append('<li><a href="#'+ number +'">'+ (number+1) +'</a></li>');
					number++;
				});
			} else {
				// if pagination exists, add href w/ value of item number to links
				$('.' + option.paginationclass + ' li a', elem).each(function(){
					$(this).attr('href', '#' + number);
					number++;
				});
			}
			
			// add current class to start slide pagination
			$('.' + option.paginationclass + ' li:eq('+ start +')', elem).addclass(option.currentclass);
			
			// click handling 
			$('.' + option.paginationclass + ' li a', elem ).click(function(){
				// pause slideshow
				if (option.play) {
					 pause();
				}
				// get clicked, pass to animate function					
				clicked = $(this).attr('href').match('[^#/]+$');
				// if current slide equals clicked, don't do anything
				if (current != clicked) {
					animate('pagination', paginationeffect, clicked);
				}
				return false;
			});
			
			// click handling 
			$('a.link', elem).click(function(){
				// pause slideshow
				if (option.play) {
					 pause();
				}
				// get clicked, pass to animate function					
				clicked = $(this).attr('href').match('[^#/]+$') - 1;
				// if current slide equals clicked, don't do anything
				if (current != clicked) {
					animate('pagination', paginationeffect, clicked);
				}
				return false;
			});
		
			if (option.play) {
				// set interval
				playinterval = setinterval(function() {
					animate('next', effect);
				}, option.play);
				// store interval id
				elem.data('interval',playinterval);
			}
		});
	};
	
	// default options
	$.fn.slides.option = {
		preload: false, // boolean, set true to preload images in an image based slideshow
		preloadimage: '/tpl/images/loading.gif', // string, name and location of loading image for preloader. default is "/img/loading.gif"
		container: 'slides_container', // string, class name for slides container. default is "slides_container"
		generatenextprev: false, // boolean, auto generate next/prev buttons
		next: 'next', // string, class name for next button
		prev: 'prev', // string, class name for previous button
		pagination: true, // boolean, if you're not using pagination you can set to false, but don't have to
		generatepagination: true, // boolean, auto generate pagination
		prependpagination: false, // boolean, prepend pagination
		paginationclass: 'pagination', // string, class name for pagination
		currentclass: 'current', // string, class name for current class
		fadespeed: 300, // number, set the speed of the fading animation in milliseconds
		fadeeasing: '', // string, must load jquery's easing plugin before http://gsgd.co.uk/sandbox/jquery/easing/
		slidespeed: 350, // number, set the speed of the sliding animation in milliseconds
		slideeasing: '', // string, must load jquery's easing plugin before http://gsgd.co.uk/sandbox/jquery/easing/
		start: 1, // number, set the speed of the sliding animation in milliseconds
		effect: 'fade', // string, '[next/prev], [pagination]', e.g. 'slide, fade' or simply 'fade' for both
		crossfade: false, // boolean, crossfade images in a image based slideshow
		randomize: false, // boolean, set to true to randomize slides
		play: 0, // number, autoplay slideshow, a positive number will set to true and be the time between slide animation in milliseconds
		pause: 0, // number, pause slideshow on click of next/prev or pagination. a positive number will set to true and be the time of pause in milliseconds
		hoverpause: false, // boolean, set to true and hovering over slideshow will pause it
		autoheight: false, // boolean, set to true to auto adjust height
		autoheightspeed: 350, // number, set auto height animation time in milliseconds
		bigtarget: false, // boolean, set to true and the whole slide will link to next slide on click
		animationstart: function(){}, // function called at the start of animation
		animationcomplete: function(){}, // function called at the completion of animation
		slidesloaded: function() {} // function is called when slides is fully loaded
	};
	
	// randomize slide order on load
	$.fn.randomize = function(callback) {
		function randomizeorder() { return(math.round(math.random())-0.5); }
			return($(this).each(function() {
			var $this = $(this);
			var $children = $this.children();
			var childcount = $children.length;
			if (childcount > 1) {
				$children.hide();
				var indices = [];
				for (i=0;i<childcount;i++) { indices[indices.length] = i; }
				indices = indices.sort(randomizeorder);
				$.each(indices,function(j,k) { 
					var $child = $children.eq(k);
					var $clone = $child.clone(true);
					$clone.show().appendto($this);
					if (callback !== undefined) {
						callback($child, $clone);
					}
				$child.remove();
			});
			}
		}));
	};
})(jquery);