/* Twilight Slideshow 0.7 */
/* Andrew Marcus & Love Media, 2010 */
/* Licensed under MIT */

(function($){$.fn.extend({twilight:function(settings){var defaults={startingSlide:0,outOpacity:1,overOpacity:1,animTime:500,animFadeTime:500,animHoverTime:250,easingMargin:'linear',easingCss:'linear',boxSelector:this.selector+' .twilight-box',arrowLeftSelector:this.selector+' .arrow-left',arrowRightSelector:this.selector+' .arrow-right',updateURL:true,listenEvent:true,forceCss:false,showId:'',slideCompleteCallback:function(N,direction){},prevNextClickCallback:function(N,direction){}}
if(!settings)settings=defaults;if(settings.startingSlide=='url'){var slide=Number(window.location.hash.substring(1))-1;if(slide<1||slide>1000||isNaN(slide))slide=0;settings.startingSlide=slide;}
for(option in defaults){if(!(option in settings)||settings[option]===undefined)settings[option]=defaults[option];}
var BACK=-1;var FORWARD=1;var useCssAnim=false;var isiPad=navigator.userAgent.match(/iPad/i)!=null;var isiPhone=navigator.userAgent.match(/iPhone/i)!=null;var isiPod=navigator.userAgent.match(/iPod/i)!=null;if(isiPad||isiPhone||isiPod||settings.forceCss)useCssAnim=true;return this.each(function(){var box=$(settings.boxSelector);var slide=2;var outerSlCounter=0;var limitTimer;var animTimeMargin;var innerCycleTimeout;if(settings.startingSlide>0&&settings.startingSlide<box.children().length){box.append(box.children('*:lt('+settings.startingSlide+')').detach());outerSlCounter=settings.startingSlide;}
switch(box.children().length){case 1:box.append(box.children().clone());box.append(box.children().clone());box.append(box.children().clone());box.append(box.children().clone());break;case 2:box.append(box.children().clone());box.append(box.children().clone());break;case 3:box.append(box.children().clone());break;case 4:box.append(box.children().clone());break;}
box.prepend(box.children().last().detach());box.prepend(box.children().last().detach());var cornerWidth=($(this).width()-box.children().eq(2).width())/2;var preShift=box.children().eq(0).width()+box.children().eq(1).width()-cornerWidth+(useCssAnim===true?0:10000);box.css('margin-left',parseInt(box.css('margin-left'))||0-preShift);var showMarginLeft=parseInt(box.css('margin-left'));var showWidth=$(this).width();box.children().first().css('margin-left',(useCssAnim===true?0:10000));fadeSlide(slide);function SlideMarginTo(slideIndex){if(!limitTimer)limitTimer=setTimeout(function(){limitTimer=null;},animTimeMargin/2)
else return false;var firstSlide=box.children().first();var lastSlide=box.children().last();var prevPrevSlide=box.children().eq(slide-2);var prevSlide=box.children().eq(slide-1);var currSlide=box.children().eq(slide);var nextSlide=box.children().eq(slide+1);var nextNextSlide=box.children().eq(slide+2);var direction=0;if(outerSlCounter<slideIndex)direction=BACK;else if(outerSlCounter>slideIndex)direction=FORWARD;switch(direction){case BACK:var cornerWidth=(showWidth-nextSlide.width())/2;var delta=-showMarginLeft-(currSlide.width()-cornerWidth+prevSlide.width());var shift=parseInt(firstSlide.css('margin-left'))||0;box.append(firstSlide.detach());box.children().stop(true,true).first().css('margin-left',firstSlide.width()+shift).animate({'margin-left':delta},animTimeMargin,settings.easingMargin,function(){transAnim=false;outerSlCounter++;if(outerSlCounter<slideIndex)setTimeout(function(){SlideMarginTo(slideIndex)},0);settings.slideCompleteCallback(outerSlCounter,BACK);});box.children('*:gt(0)').css('margin-left',0);fadeSlide(slide);updateURL(slideIndex);break;case FORWARD:var cornerWidth=(showWidth-prevSlide.width())/2;var delta=-showMarginLeft-(prevPrevSlide.width()-cornerWidth+lastSlide.width());var shift=-parseInt(firstSlide.css('margin-left'));var preMarginShift=-(lastSlide.width()+shift);box.prepend(lastSlide.detach());box.children().stop(true,true).first().css('margin-left',preMarginShift).animate({'margin-left':delta},animTimeMargin,settings.easingMargin,function(){transAnim=false;outerSlCounter--;if(outerSlCounter>slideIndex)setTimeout(function(){SlideMarginTo(slideIndex)},0);settings.slideCompleteCallback(outerSlCounter,FORWARD);});box.children('*:gt(0)').css('margin-left',0);prevSlide.css('opacity',settings.overOpacity);fadeSlide(slide);updateURL(slideIndex);break;default:return false;}}
function SlideCssTo(slideIndex){var firstSlide=box.children().first();var lastSlide=box.children().last();var prevPrevSlide=box.children().eq(slide-2);var prevSlide=box.children().eq(slide-1);var currSlide=box.children().eq(slide);var nextSlide=box.children().eq(slide+1);var nextNextSlide=box.children().eq(slide+2);var direction;if(outerSlCounter<slideIndex)direction=BACK;else if(outerSlCounter>slideIndex)direction=FORWARD;switch(direction){case BACK:var cornerWidth=(showWidth-nextSlide.width())/2;var delta=-showMarginLeft-(currSlide.width()-cornerWidth+prevSlide.width());var shift=firstSlide.width()-delta;box.css({'-webkit-transition-timing-function':settings.easingCss,'-webkit-transition-duration':animTimeCss,'-webkit-transform':'translate3d(-'+shift+'px, 0px, 0px)','transition-timing-function':settings.easingCss,'transition-duration':animTimeCss,'transform':'translate3d(-'+shift+'px, 0px, 0px)'}).bind('webkitTransitionEnd transitionEnd',function(){box.css({'-webkit-transition-duration':'0s','-webkit-transform':'translate3d('+delta+'px, 0px, 0px)','transition-duration':'0s','transform':'translate3d('+delta+'px, 0px, 0px)'});box.append(firstSlide.detach());outerSlCounter++;innerCycleTimeout=setTimeout(function(){SlideCssTo(slideIndex)},0);box.unbind('webkitTransitionEnd transitionEnd');transAnim=false;settings.slideCompleteCallback(outerSlCounter,BACK);});fadeSlide(slide+1);updateURL(slideIndex);break;case FORWARD:var cornerWidth=(showWidth-prevSlide.width())/2;var delta=-showMarginLeft-(prevPrevSlide.width()-cornerWidth+lastSlide.width());var shift=lastSlide.width()+delta;box.css({'-webkit-transition-timing-function':settings.easingCss,'-webkit-transition-duration':animTimeCss,'-webkit-transform':'translate3d('+shift+'px, 0px, 0px)','transition-timing-function':settings.easingCss,'transition-duration':animTimeCss,'transform':'translate3d('+shift+'px, 0px, 0px)'}).bind('webkitTransitionEnd transitionEnd',function(){box.css({'-webkit-transition-duration':'0s','-webkit-transform':'translate3d('+delta+'px, 0px, 0px)','transition-duration':'0s','transform':'translate3d('+delta+'px, 0px, 0px)'});box.prepend(lastSlide.detach());prevPrevSlide.css('opacity',settings.overOpacity);outerSlCounter--;innerCycleTimeout=setTimeout(function(){SlideCssTo(slideIndex)},0);box.unbind('webkitTransitionEnd transitionEnd');transAnim=false;settings.slideCompleteCallback(outerSlCounter,FORWARD);});fadeSlide(slide-1);updateURL(slideIndex);break;default:return false;}}
function fadeSlide(n){if(useCssAnim){box.children().eq(n).css('opacity',1);box.children('*:lt('+n.toString()+'), *:gt('+n.toString()+')').css({'opacity':settings.outOpacity,'-webkit-transition-duration':(settings.animTime/1000).toString()+'s'});}
else{box.children().eq(n).animate({opacity:1},{queue:false,duration:settings.animFadeTime});box.children('*:lt('+n.toString()+'), *:gt('+n.toString()+')').animate({opacity:settings.outOpacity},{queue:false,duration:settings.animFadeTime});}}
function fadeArrow(direction,opacity){if(direction==BACK)var corner=slide+1;else var corner=slide-1;var cornerSlide=box.children().eq(corner);if(!useCssAnim)cornerSlide.animate({opacity:opacity},{queue:false,duration:settings.animHoverTime});}
function SlideTo(slideIndex){box.unbind('webkitTransitionEnd transitionEnd');animTimeMargin=parseInt(settings.animTime/Math.abs(outerSlCounter-slideIndex));animTimeCss=animTimeMargin/1000+'s';if(useCssAnim)SlideCssTo(slideIndex);else SlideMarginTo(slideIndex);return false;}
function updateURL(n){if(settings.updateURL){n++;var N=box.children().length;var url=window.location.toString();url=url.substring(0,url.indexOf('#'));if(n<=0)n+=N;else if(n>N)n-=N;window.location.replace(url+'#'+n.toString());}}
$(settings.arrowLeftSelector).bind('click dblclick',function(){settings.prevNextClickCallback(outerSlCounter,FORWARD);return SlideTo(outerSlCounter-1);}).hover(function(){fadeArrow(FORWARD,settings.overOpacity);},function(){fadeArrow(FORWARD,settings.outOpacity);});$(settings.arrowRightSelector).bind('click dblclick',function(){settings.prevNextClickCallback(outerSlCounter,BACK);return SlideTo(outerSlCounter+1);}).hover(function(){fadeArrow(BACK,settings.overOpacity);},function(){fadeArrow(BACK,settings.outOpacity);});if(settings.listenEvent){$(document).bind('twilight',function(transEvent){if(settings.showId==transEvent.showId||settings.showId==''){var N=transEvent.index;if(N<0)N=0;else if(N>=box.children().length)N=box.children().length-1;SlideTo(N);}},false);}});}});})(jQuery);