Team:ETH Zurich/Templates/FlexSlider

• <a class="' + namespace + 'prev" href="#">' + slider.vars.prevText + '</a>
• <a class="' + namespace + 'next" href="#">' + slider.vars.nextText + '</a>

         // CONTROLSCONTAINER:
         if (slider.controlsContainer) {
           $(slider.controlsContainer).append(directionNavScaffold);
           slider.directionNav = $('.' + namespace + 'direction-nav li a', slider.controlsContainer);
         } else {
           slider.append(directionNavScaffold);
           slider.directionNav = $('.' + namespace + 'direction-nav li a', slider);
         }

         methods.directionNav.update();

         slider.directionNav.bind(eventType, function(event) {
           event.preventDefault();
           var target;

           if (watchedEvent === "" || watchedEvent === event.type) {
             target = ($(this).hasClass(namespace + 'next')) ? slider.getTarget('next') : slider.getTarget('prev');
             slider.flexAnimate(target, slider.vars.pauseOnAction);
           }

           // setup flags to prevent event duplication
           if (watchedEvent === "") {
             watchedEvent = event.type;
           }
           methods.setToClearWatchedEvent();
         });
       },
       update: function() {
         var disabledClass = namespace + 'disabled';
         if (slider.pagingCount === 1) {
           slider.directionNav.addClass(disabledClass).attr('tabindex', '-1');
         } else if (!slider.vars.animationLoop) {
           if (slider.animatingTo === 0) {
             slider.directionNav.removeClass(disabledClass).filter('.' + namespace + "prev").addClass(disabledClass).attr('tabindex', '-1');
           } else if (slider.animatingTo === slider.last) {
             slider.directionNav.removeClass(disabledClass).filter('.' + namespace + "next").addClass(disabledClass).attr('tabindex', '-1');
           } else {
             slider.directionNav.removeClass(disabledClass).removeAttr('tabindex');
           }
         } else {
           slider.directionNav.removeClass(disabledClass).removeAttr('tabindex');
         }
       }
     },
     pausePlay: {
       setup: function() {

         // CONTROLSCONTAINER:
         if (slider.controlsContainer) {
           slider.controlsContainer.append(pausePlayScaffold);
           slider.pausePlay = $('.' + namespace + 'pauseplay a', slider.controlsContainer);
         } else {
           slider.append(pausePlayScaffold);
           slider.pausePlay = $('.' + namespace + 'pauseplay a', slider);
         }

         methods.pausePlay.update((slider.vars.slideshow) ? namespace + 'pause' : namespace + 'play');

         slider.pausePlay.bind(eventType, function(event) {
           event.preventDefault();

           if (watchedEvent === "" || watchedEvent === event.type) {
             if ($(this).hasClass(namespace + 'pause')) {
               slider.manualPause = true;
               slider.manualPlay = false;
               slider.pause();
             } else {
               slider.manualPause = false;
               slider.manualPlay = true;
               slider.play();
             }
           }

           // setup flags to prevent event duplication
           if (watchedEvent === "") {
             watchedEvent = event.type;
           }
           methods.setToClearWatchedEvent();
         });
       },
       update: function(state) {
         (state === "play") ? slider.pausePlay.removeClass(namespace + 'pause').addClass(namespace + 'play').html(slider.vars.playText) : slider.pausePlay.removeClass(namespace + 'play').addClass(namespace + 'pause').html(slider.vars.pauseText);
       }
     },
     touch: function() {
       var startX,
         startY,
         offset,
         cwidth,
         dx,
         startT,
         scrolling = false,
         localX = 0,
         localY = 0,
         accDx = 0;

       if(!msGesture){
           el.addEventListener('touchstart', onTouchStart, false);

           function onTouchStart(e) {
             if (slider.animating) {
               e.preventDefault();
             } else if ( ( window.navigator.msPointerEnabled ) || e.touches.length === 1 ) {
               slider.pause();
               // CAROUSEL:
               cwidth = (vertical) ? slider.h : slider. w;
               startT = Number(new Date());
               // CAROUSEL:

               // Local vars for X and Y points.
               localX = e.touches[0].pageX;
               localY = e.touches[0].pageY;

               offset = (carousel && reverse && slider.animatingTo === slider.last) ? 0 :
                        (carousel && reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                        (carousel && slider.currentSlide === slider.last) ? slider.limit :
                        (carousel) ? ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.currentSlide :
                        (reverse) ? (slider.last - slider.currentSlide + slider.cloneOffset) * cwidth : (slider.currentSlide + slider.cloneOffset) * cwidth;
               startX = (vertical) ? localY : localX;
               startY = (vertical) ? localX : localY;

               el.addEventListener('touchmove', onTouchMove, false);
               el.addEventListener('touchend', onTouchEnd, false);
             }
           }

           function onTouchMove(e) {
             // Local vars for X and Y points.

             localX = e.touches[0].pageX;
             localY = e.touches[0].pageY;

             dx = (vertical) ? startX - localY : startX - localX;
             scrolling = (vertical) ? (Math.abs(dx) < Math.abs(localX - startY)) : (Math.abs(dx) < Math.abs(localY - startY));

             var fxms = 500;

             if ( ! scrolling || Number( new Date() ) - startT > fxms ) {
               e.preventDefault();
               if (!fade && slider.transitions) {
                 if (!slider.vars.animationLoop) {
                   dx = dx/((slider.currentSlide === 0 && dx < 0 || slider.currentSlide === slider.last && dx > 0) ? (Math.abs(dx)/cwidth+2) : 1);
                 }
                 slider.setProps(offset + dx, "setTouch");
               }
             }
           }

           function onTouchEnd(e) {
             // finish the touch by undoing the touch session
             el.removeEventListener('touchmove', onTouchMove, false);

             if (slider.animatingTo === slider.currentSlide && !scrolling && !(dx === null)) {
               var updateDx = (reverse) ? -dx : dx,
                   target = (updateDx > 0) ? slider.getTarget('next') : slider.getTarget('prev');

               if (slider.canAdvance(target) && (Number(new Date()) - startT < 550 && Math.abs(updateDx) > 50 || Math.abs(updateDx) > cwidth/2)) {
                 slider.flexAnimate(target, slider.vars.pauseOnAction);
               } else {
                 if (!fade) slider.flexAnimate(slider.currentSlide, slider.vars.pauseOnAction, true);
               }
             }
             el.removeEventListener('touchend', onTouchEnd, false);

             startX = null;
             startY = null;
             dx = null;
             offset = null;
           }
       }else{
           el.style.msTouchAction = "none";
           el._gesture = new MSGesture();
           el._gesture.target = el;
           el.addEventListener("MSPointerDown", onMSPointerDown, false);
           el._slider = slider;
           el.addEventListener("MSGestureChange", onMSGestureChange, false);
           el.addEventListener("MSGestureEnd", onMSGestureEnd, false);

           function onMSPointerDown(e){
               e.stopPropagation();
               if (slider.animating) {
                   e.preventDefault();
               }else{
                   slider.pause();
                   el._gesture.addPointer(e.pointerId);
                   accDx = 0;
                   cwidth = (vertical) ? slider.h : slider. w;
                   startT = Number(new Date());
                   // CAROUSEL:

                   offset = (carousel && reverse && slider.animatingTo === slider.last) ? 0 :
                       (carousel && reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                           (carousel && slider.currentSlide === slider.last) ? slider.limit :
                               (carousel) ? ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.currentSlide :
                                   (reverse) ? (slider.last - slider.currentSlide + slider.cloneOffset) * cwidth : (slider.currentSlide + slider.cloneOffset) * cwidth;
               }
           }

           function onMSGestureChange(e) {
               e.stopPropagation();
               var slider = e.target._slider;
               if(!slider){
                   return;
               }
               var transX = -e.translationX,
                   transY = -e.translationY;

               //Accumulate translations.
               accDx = accDx + ((vertical) ? transY : transX);
               dx = accDx;
               scrolling = (vertical) ? (Math.abs(accDx) < Math.abs(-transX)) : (Math.abs(accDx) < Math.abs(-transY));

               if(e.detail === e.MSGESTURE_FLAG_INERTIA){
                   setImmediate(function (){
                       el._gesture.stop();
                   });

                   return;
               }

               if (!scrolling || Number(new Date()) - startT > 500) {
                   e.preventDefault();
                   if (!fade && slider.transitions) {
                       if (!slider.vars.animationLoop) {
                           dx = accDx / ((slider.currentSlide === 0 && accDx < 0 || slider.currentSlide === slider.last && accDx > 0) ? (Math.abs(accDx) / cwidth + 2) : 1);
                       }
                       slider.setProps(offset + dx, "setTouch");
                   }
               }
           }

           function onMSGestureEnd(e) {
               e.stopPropagation();
               var slider = e.target._slider;
               if(!slider){
                   return;
               }
               if (slider.animatingTo === slider.currentSlide && !scrolling && !(dx === null)) {
                   var updateDx = (reverse) ? -dx : dx,
                       target = (updateDx > 0) ? slider.getTarget('next') : slider.getTarget('prev');

                   if (slider.canAdvance(target) && (Number(new Date()) - startT < 550 && Math.abs(updateDx) > 50 || Math.abs(updateDx) > cwidth/2)) {
                       slider.flexAnimate(target, slider.vars.pauseOnAction);
                   } else {
                       if (!fade) slider.flexAnimate(slider.currentSlide, slider.vars.pauseOnAction, true);
                   }
               }

               startX = null;
               startY = null;
               dx = null;
               offset = null;
               accDx = 0;
           }
       }
     },
     resize: function() {
       if (!slider.animating && slider.is(':visible')) {
         if (!carousel) slider.doMath();

         if (fade) {
           // SMOOTH HEIGHT:
           methods.smoothHeight();
         } else if (carousel) { //CAROUSEL:
           slider.slides.width(slider.computedW);
           slider.update(slider.pagingCount);
           slider.setProps();
         }
         else if (vertical) { //VERTICAL:
           slider.viewport.height(slider.h);
           slider.setProps(slider.h, "setTotal");
         } else {
           // SMOOTH HEIGHT:
           if (slider.vars.smoothHeight) methods.smoothHeight();
           slider.newSlides.width(slider.computedW);
           slider.setProps(slider.computedW, "setTotal");
         }
       }
     },
     smoothHeight: function(dur) {
       if (!vertical || fade) {
         var $obj = (fade) ? slider : slider.viewport;
         (dur) ? $obj.animate({"height": slider.slides.eq(slider.animatingTo).height()}, dur) : $obj.height(slider.slides.eq(slider.animatingTo).height());
       }
     },
     sync: function(action) {
       var $obj = $(slider.vars.sync).data("flexslider"),
           target = slider.animatingTo;

       switch (action) {
         case "animate": $obj.flexAnimate(target, slider.vars.pauseOnAction, false, true); break;
         case "play": if (!$obj.playing && !$obj.asNav) { $obj.play(); } break;
         case "pause": $obj.pause(); break;
       }
     },
     pauseInvisible: {
       visProp: null,
       init: function() {
         var prefixes = ['webkit','moz','ms','o'];

         if ('hidden' in document) return 'hidden';
         for (var i = 0; i < prefixes.length; i++) {
           if ((prefixes[i] + 'Hidden') in document) 
           methods.pauseInvisible.visProp = prefixes[i] + 'Hidden';
         }
         if (methods.pauseInvisible.visProp) {
           var evtname = methods.pauseInvisible.visProp.replace(/[H|h]idden/,) + 'visibilitychange';
           document.addEventListener(evtname, function() {
             if (methods.pauseInvisible.isHidden()) {
               if(slider.startTimeout) clearTimeout(slider.startTimeout); //If clock is ticking, stop timer and prevent from starting while invisible
               else slider.pause(); //Or just pause
             }
             else {
               if(slider.started) slider.play(); //Initiated before, just play
               else (slider.vars.initDelay > 0) ? setTimeout(slider.play, slider.vars.initDelay) : slider.play(); //Didn't init before: simply init or wait for it
             }
           });
         }       
       },
       isHidden: function() {
         return document[methods.pauseInvisible.visProp] || false;
       }
     },
     setToClearWatchedEvent: function() {
       clearTimeout(watchedEventClearTimer);
       watchedEventClearTimer = setTimeout(function() {
         watchedEvent = "";
       }, 3000);
     }
   }

   // public methods
   slider.flexAnimate = function(target, pause, override, withSync, fromNav) {
     if (!slider.vars.animationLoop && target !== slider.currentSlide) {
       slider.direction = (target > slider.currentSlide) ? "next" : "prev";
     }

     if (asNav && slider.pagingCount === 1) slider.direction = (slider.currentItem < target) ? "next" : "prev";

     if (!slider.animating && (slider.canAdvance(target, fromNav) || override) && slider.is(":visible")) {
       if (asNav && withSync) {
         var master = $(slider.vars.asNavFor).data('flexslider');
         slider.atEnd = target === 0 || target === slider.count - 1;
         master.flexAnimate(target, true, false, true, fromNav);
         slider.direction = (slider.currentItem < target) ? "next" : "prev";
         master.direction = slider.direction;

         if (Math.ceil((target + 1)/slider.visible) - 1 !== slider.currentSlide && target !== 0) {
           slider.currentItem = target;
           slider.slides.removeClass(namespace + "active-slide").eq(target).addClass(namespace + "active-slide");
           target = Math.floor(target/slider.visible);
         } else {
           slider.currentItem = target;
           slider.slides.removeClass(namespace + "active-slide").eq(target).addClass(namespace + "active-slide");
           return false;
         }
       }

       slider.animating = true;
       slider.animatingTo = target;

       // SLIDESHOW:
       if (pause) slider.pause();

       // API: before() animation Callback
       slider.vars.before(slider);

       // SYNC:
       if (slider.syncExists && !fromNav) methods.sync("animate");

       // CONTROLNAV
       if (slider.vars.controlNav) methods.controlNav.active();

       // !CAROUSEL:
       // CANDIDATE: slide active class (for add/remove slide)
       if (!carousel) slider.slides.removeClass(namespace + 'active-slide').eq(target).addClass(namespace + 'active-slide');

       // INFINITE LOOP:
       // CANDIDATE: atEnd
       slider.atEnd = target === 0 || target === slider.last;

       // DIRECTIONNAV:
       if (slider.vars.directionNav) methods.directionNav.update();

       if (target === slider.last) {
         // API: end() of cycle Callback
         slider.vars.end(slider);
         // SLIDESHOW && !INFINITE LOOP:
         if (!slider.vars.animationLoop) slider.pause();
       }

       // SLIDE:
       if (!fade) {
         var dimension = (vertical) ? slider.slides.filter(':first').height() : slider.computedW,
             margin, slideString, calcNext;

         // INFINITE LOOP / REVERSE:
         if (carousel) {
           //margin = (slider.vars.itemWidth > slider.w) ? slider.vars.itemMargin * 2 : slider.vars.itemMargin;
           margin = slider.vars.itemMargin;
           calcNext = ((slider.itemW + margin) * slider.move) * slider.animatingTo;
           slideString = (calcNext > slider.limit && slider.visible !== 1) ? slider.limit : calcNext;
         } else if (slider.currentSlide === 0 && target === slider.count - 1 && slider.vars.animationLoop && slider.direction !== "next") {
           slideString = (reverse) ? (slider.count + slider.cloneOffset) * dimension : 0;
         } else if (slider.currentSlide === slider.last && target === 0 && slider.vars.animationLoop && slider.direction !== "prev") {
           slideString = (reverse) ? 0 : (slider.count + 1) * dimension;
         } else {
           slideString = (reverse) ? ((slider.count - 1) - target + slider.cloneOffset) * dimension : (target + slider.cloneOffset) * dimension;
         }
         slider.setProps(slideString, "", slider.vars.animationSpeed);
         if (slider.transitions) {
           if (!slider.vars.animationLoop || !slider.atEnd) {
             slider.animating = false;
             slider.currentSlide = slider.animatingTo;
           }
           slider.container.unbind("webkitTransitionEnd transitionend");
           slider.container.bind("webkitTransitionEnd transitionend", function() {
             slider.wrapup(dimension);
           });
         } else {
           slider.container.animate(slider.args, slider.vars.animationSpeed, slider.vars.easing, function(){
             slider.wrapup(dimension);
           });
         }
       } else { // FADE:
         if (!touch) {
           //slider.slides.eq(slider.currentSlide).fadeOut(slider.vars.animationSpeed, slider.vars.easing);
           //slider.slides.eq(target).fadeIn(slider.vars.animationSpeed, slider.vars.easing, slider.wrapup);

           slider.slides.eq(slider.currentSlide).css({"zIndex": 1}).animate({"opacity": 0}, slider.vars.animationSpeed, slider.vars.easing);
           slider.slides.eq(target).css({"zIndex": 2}).animate({"opacity": 1}, slider.vars.animationSpeed, slider.vars.easing, slider.wrapup);

         } else {
           slider.slides.eq(slider.currentSlide).css({ "opacity": 0, "zIndex": 1 });
           slider.slides.eq(target).css({ "opacity": 1, "zIndex": 2 });
           slider.wrapup(dimension);
         }
       }
       // SMOOTH HEIGHT:
       if (slider.vars.smoothHeight) methods.smoothHeight(slider.vars.animationSpeed);
     }
   }
   slider.wrapup = function(dimension) {
     // SLIDE:
     if (!fade && !carousel) {
       if (slider.currentSlide === 0 && slider.animatingTo === slider.last && slider.vars.animationLoop) {
         slider.setProps(dimension, "jumpEnd");
       } else if (slider.currentSlide === slider.last && slider.animatingTo === 0 && slider.vars.animationLoop) {
         slider.setProps(dimension, "jumpStart");
       }
     }
     slider.animating = false;
     slider.currentSlide = slider.animatingTo;
     // API: after() animation Callback
     slider.vars.after(slider);
   }

   // SLIDESHOW:
   slider.animateSlides = function() {
     if (!slider.animating && focused ) slider.flexAnimate(slider.getTarget("next"));
   }
   // SLIDESHOW:
   slider.pause = function() {
     clearInterval(slider.animatedSlides);
     slider.animatedSlides = null;
     slider.playing = false;
     // PAUSEPLAY:
     if (slider.vars.pausePlay) methods.pausePlay.update("play");
     // SYNC:
     if (slider.syncExists) methods.sync("pause");
   }
   // SLIDESHOW:
   slider.play = function() {
     if (slider.playing) clearInterval(slider.animatedSlides);
     slider.animatedSlides = slider.animatedSlides || setInterval(slider.animateSlides, slider.vars.slideshowSpeed);
     slider.started = slider.playing = true;
     // PAUSEPLAY:
     if (slider.vars.pausePlay) methods.pausePlay.update("pause");
     // SYNC:
     if (slider.syncExists) methods.sync("play");
   }
   // STOP:
   slider.stop = function () {
     slider.pause();
     slider.stopped = true;
   }
   slider.canAdvance = function(target, fromNav) {
     // ASNAV:
     var last = (asNav) ? slider.pagingCount - 1 : slider.last;
     return (fromNav) ? true :
            (asNav && slider.currentItem === slider.count - 1 && target === 0 && slider.direction === "prev") ? true :
            (asNav && slider.currentItem === 0 && target === slider.pagingCount - 1 && slider.direction !== "next") ? false :
            (target === slider.currentSlide && !asNav) ? false :
            (slider.vars.animationLoop) ? true :
            (slider.atEnd && slider.currentSlide === 0 && target === last && slider.direction !== "next") ? false :
            (slider.atEnd && slider.currentSlide === last && target === 0 && slider.direction === "next") ? false :
            true;
   }
   slider.getTarget = function(dir) {
     slider.direction = dir;
     if (dir === "next") {
       return (slider.currentSlide === slider.last) ? 0 : slider.currentSlide + 1;
     } else {
       return (slider.currentSlide === 0) ? slider.last : slider.currentSlide - 1;
     }
   }

   // SLIDE:
   slider.setProps = function(pos, special, dur) {
     var target = (function() {
       var posCheck = (pos) ? pos : ((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo,
           posCalc = (function() {
             if (carousel) {
               return (special === "setTouch") ? pos :
                      (reverse && slider.animatingTo === slider.last) ? 0 :
                      (reverse) ? slider.limit - (((slider.itemW + slider.vars.itemMargin) * slider.move) * slider.animatingTo) :
                      (slider.animatingTo === slider.last) ? slider.limit : posCheck;
             } else {
               switch (special) {
                 case "setTotal": return (reverse) ? ((slider.count - 1) - slider.currentSlide + slider.cloneOffset) * pos : (slider.currentSlide + slider.cloneOffset) * pos;
                 case "setTouch": return (reverse) ? pos : pos;
                 case "jumpEnd": return (reverse) ? pos : slider.count * pos;
                 case "jumpStart": return (reverse) ? slider.count * pos : pos;
                 default: return pos;
               }
             }
           }());

           return (posCalc * -1) + "px";
         }());

     if (slider.transitions) {
       target = (vertical) ? "translate3d(0," + target + ",0)" : "translate3d(" + target + ",0,0)";
       dur = (dur !== undefined) ? (dur/1000) + "s" : "0s";
       slider.container.css("-" + slider.pfx + "-transition-duration", dur);
     }

     slider.args[slider.prop] = target;
     if (slider.transitions || dur === undefined) slider.container.css(slider.args);
   }

   slider.setup = function(type) {
     // SLIDE:
     if (!fade) {
       var sliderOffset, arr;

       if (type === "init") {

         // INFINITE LOOP:
         slider.cloneCount = 0;
         slider.cloneOffset = 0;
         // REVERSE:
         if (reverse) {
           arr = $.makeArray(slider.slides).reverse();
           slider.slides = $(arr);
           slider.container.empty().append(slider.slides);
         }
       }
       // INFINITE LOOP && !CAROUSEL:
       if (slider.vars.animationLoop && !carousel) {
         slider.cloneCount = 2;
         slider.cloneOffset = 1;
         // clear out old clones
         if (type !== "init") slider.container.find('.clone').remove();
         slider.container.append(slider.slides.first().clone().addClass('clone').attr('aria-hidden', 'true')).prepend(slider.slides.last().clone().addClass('clone').attr('aria-hidden', 'true'));
       }
       slider.newSlides = $(slider.vars.selector, slider);

       sliderOffset = (reverse) ? slider.count - 1 - slider.currentSlide + slider.cloneOffset : slider.currentSlide + slider.cloneOffset;
       // VERTICAL:
       if (vertical && !carousel) {
         slider.container.height((slider.count + slider.cloneCount) * 200 + "%").css("position", "absolute").width("100%");
         setTimeout(function(){
           slider.newSlides.css({"display": "block"});
           slider.doMath();
           slider.viewport.height(slider.h);
           slider.setProps(sliderOffset * slider.h, "init");
         }, (type === "init") ? 100 : 0);
       } else {
         slider.container.width((slider.count + slider.cloneCount) * 200 + "%");
         slider.setProps(sliderOffset * slider.computedW, "init");
         setTimeout(function(){
           slider.doMath();
           slider.newSlides.css({"width": slider.computedW, "float": "left", "display": "block"});
           // SMOOTH HEIGHT:
           if (slider.vars.smoothHeight) methods.smoothHeight();
         }, (type === "init") ? 100 : 0);
       }
     } else { // FADE:
       slider.slides.css({"width": "100%", "float": "left", "marginRight": "-100%", "position": "relative"});
       if (type === "init") {
         if (!touch) {
           //slider.slides.eq(slider.currentSlide).fadeIn(slider.vars.animationSpeed, slider.vars.easing);
           slider.slides.css({ "opacity": 0, "display": "block", "zIndex": 1 }).eq(slider.currentSlide).css({"zIndex": 2}).animate({"opacity": 1},slider.vars.animationSpeed,slider.vars.easing);
         } else {
           slider.slides.css({ "opacity": 0, "display": "block", "webkitTransition": "opacity " + slider.vars.animationSpeed / 1000 + "s ease", "zIndex": 1 }).eq(slider.currentSlide).css({ "opacity": 1, "zIndex": 2});
         }
       }
       // SMOOTH HEIGHT:
       if (slider.vars.smoothHeight) methods.smoothHeight();
     }
     // !CAROUSEL:
     // CANDIDATE: active slide
     if (!carousel) slider.slides.removeClass(namespace + "active-slide").eq(slider.currentSlide).addClass(namespace + "active-slide");
   }

   slider.doMath = function() {
     var slide = slider.slides.first(),
         slideMargin = slider.vars.itemMargin,
         minItems = slider.vars.minItems,
         maxItems = slider.vars.maxItems;

     slider.w = (slider.viewport===undefined) ? slider.width() : slider.viewport.width();
     slider.h = slide.height();
     slider.boxPadding = slide.outerWidth() - slide.width();

     // CAROUSEL:
     if (carousel) {
       slider.itemT = slider.vars.itemWidth + slideMargin;
       slider.minW = (minItems) ? minItems * slider.itemT : slider.w;
       slider.maxW = (maxItems) ? (maxItems * slider.itemT) - slideMargin : slider.w;
       slider.itemW = (slider.minW > slider.w) ? (slider.w - (slideMargin * (minItems - 1)))/minItems :
                      (slider.maxW < slider.w) ? (slider.w - (slideMargin * (maxItems - 1)))/maxItems :
                      (slider.vars.itemWidth > slider.w) ? slider.w : slider.vars.itemWidth;

       slider.visible = Math.floor(slider.w/(slider.itemW));
       slider.move = (slider.vars.move > 0 && slider.vars.move < slider.visible ) ? slider.vars.move : slider.visible;
       slider.pagingCount = Math.ceil(((slider.count - slider.visible)/slider.move) + 1);
       slider.last =  slider.pagingCount - 1;
       slider.limit = (slider.pagingCount === 1) ? 0 :
                      (slider.vars.itemWidth > slider.w) ? (slider.itemW * (slider.count - 1)) + (slideMargin * (slider.count - 1)) : ((slider.itemW + slideMargin) * slider.count) - slider.w - slideMargin;
     } else {
       slider.itemW = slider.w;
       slider.pagingCount = slider.count;
       slider.last = slider.count - 1;
     }
     slider.computedW = slider.itemW - slider.boxPadding;
   }

   slider.update = function(pos, action) {
     slider.doMath();

     // update currentSlide and slider.animatingTo if necessary
     if (!carousel) {
       if (pos < slider.currentSlide) {
         slider.currentSlide += 1;
       } else if (pos <= slider.currentSlide && pos !== 0) {
         slider.currentSlide -= 1;
       }
       slider.animatingTo = slider.currentSlide;
     }

     // update controlNav
     if (slider.vars.controlNav && !slider.manualControls) {
       if ((action === "add" && !carousel) || slider.pagingCount > slider.controlNav.length) {
         methods.controlNav.update("add");
       } else if ((action === "remove" && !carousel) || slider.pagingCount < slider.controlNav.length) {
         if (carousel && slider.currentSlide > slider.last) {
           slider.currentSlide -= 1;
           slider.animatingTo -= 1;
         }
         methods.controlNav.update("remove", slider.last);
       }
     }
     // update directionNav
     if (slider.vars.directionNav) methods.directionNav.update();

   }

   slider.addSlide = function(obj, pos) {
     var $obj = $(obj);

     slider.count += 1;
     slider.last = slider.count - 1;

     // append new slide
     if (vertical && reverse) {
       (pos !== undefined) ? slider.slides.eq(slider.count - pos).after($obj) : slider.container.prepend($obj);
     } else {
       (pos !== undefined) ? slider.slides.eq(pos).before($obj) : slider.container.append($obj);
     }

     // update currentSlide, animatingTo, controlNav, and directionNav
     slider.update(pos, "add");

     // update slider.slides
     slider.slides = $(slider.vars.selector + ':not(.clone)', slider);
     // re-setup the slider to accomdate new slide
     slider.setup();

     //FlexSlider: added() Callback
     slider.vars.added(slider);
   }
   slider.removeSlide = function(obj) {
     var pos = (isNaN(obj)) ? slider.slides.index($(obj)) : obj;

     // update count
     slider.count -= 1;
     slider.last = slider.count - 1;

     // remove slide
     if (isNaN(obj)) {
       $(obj, slider.slides).remove();
     } else {
       (vertical && reverse) ? slider.slides.eq(slider.last).remove() : slider.slides.eq(obj).remove();
     }

     // update currentSlide, animatingTo, controlNav, and directionNav
     slider.doMath();
     slider.update(pos, "remove");

     // update slider.slides
     slider.slides = $(slider.vars.selector + ':not(.clone)', slider);
     // re-setup the slider to accomdate new slide
     slider.setup();

     // FlexSlider: removed() Callback
     slider.vars.removed(slider);
   }

   //FlexSlider: Initialize
   methods.init();
 }

 // Ensure the slider isn't focussed if the window loses focus.
 $( window ).blur( function ( e ) {
   focused = false;
 }).focus( function ( e ) {
   focused = true;
 });

 //FlexSlider: Default Settings
 $.flexslider.defaults = {
   namespace: "flex-",             //{NEW} String: Prefix string attached to the class of every element generated by the plugin
   selector: ".slides > li",       //{NEW} Selector: Must match a simple pattern. '{container} > {slide}' -- Ignore pattern at your own peril
   animation: "fade",              //String: Select your animation type, "fade" or "slide"
   easing: "swing",                //{NEW} String: Determines the easing method used in jQuery transitions. jQuery easing plugin is supported!
   direction: "horizontal",        //String: Select the sliding direction, "horizontal" or "vertical"
   reverse: false,                 //{NEW} Boolean: Reverse the animation direction
   animationLoop: true,            //Boolean: Should the animation loop? If false, directionNav will received "disable" classes at either end
   smoothHeight: false,            //{NEW} Boolean: Allow height of the slider to animate smoothly in horizontal mode
   startAt: 0,                     //Integer: The slide that the slider should start on. Array notation (0 = first slide)
   slideshow: true,                //Boolean: Animate slider automatically
   slideshowSpeed: 7000,           //Integer: Set the speed of the slideshow cycling, in milliseconds
   animationSpeed: 600,            //Integer: Set the speed of animations, in milliseconds
   initDelay: 0,                   //{NEW} Integer: Set an initialization delay, in milliseconds
   randomize: false,               //Boolean: Randomize slide order
   thumbCaptions: false,           //Boolean: Whether or not to put captions on thumbnails when using the "thumbnails" controlNav.

   // Usability features
   pauseOnAction: true,            //Boolean: Pause the slideshow when interacting with control elements, highly recommended.
   pauseOnHover: true,            //Boolean: Pause the slideshow when hovering over slider, then resume when no longer hovering
   pauseInvisible: true,   		//{NEW} Boolean: Pause the slideshow when tab is invisible, resume when visible. Provides better UX, lower CPU usage.
   useCSS: true,                   //{NEW} Boolean: Slider will use CSS3 transitions if available
   touch: true,                    //{NEW} Boolean: Allow touch swipe navigation of the slider on touch-enabled devices
   video: false,                   //{NEW} Boolean: If using video in the slider, will prevent CSS3 3D Transforms to avoid graphical glitches

   // Primary Controls
   controlNav: true,               //Boolean: Create navigation for paging control of each clide? Note: Leave true for manualControls usage
   directionNav: true,             //Boolean: Create navigation for previous/next navigation? (true/false)
   prevText: "Previous",           //String: Set the text for the "previous" directionNav item
   nextText: "Next",               //String: Set the text for the "next" directionNav item

   // Secondary Navigation
   keyboard: true,                 //Boolean: Allow slider navigating via keyboard left/right keys
   multipleKeyboard: false,        //{NEW} Boolean: Allow keyboard navigation to affect multiple sliders. Default behavior cuts out keyboard navigation with more than one slider present.
   mousewheel: true,              //{UPDATED} Boolean: Requires jquery.mousewheel.js (https://github.com/brandonaaron/jquery-mousewheel) - Allows slider navigating via mousewheel
   pausePlay: false,               //Boolean: Create pause/play dynamic element
   pauseText: "Pause",             //String: Set the text for the "pause" pausePlay item
   playText: "Play",               //String: Set the text for the "play" pausePlay item

   // Special properties
   controlsContainer: "",          //{UPDATED} jQuery Object/Selector: Declare which container the navigation elements should be appended too. Default container is the FlexSlider element. Example use would be $(".flexslider-container"). Property is ignored if given element is not found.
   manualControls: "",             //{UPDATED} jQuery Object/Selector: Declare custom control navigation. Examples would be $(".flex-control-nav li") or "#tabs-nav li img", etc. The number of elements in your controlNav should match the number of slides/tabs.
   sync: "",                       //{NEW} Selector: Mirror the actions performed on this slider with another slider. Use with care.
   asNavFor: "",                   //{NEW} Selector: Internal property exposed for turning the slider into a thumbnail navigation for another slider

   // Carousel Options
   itemWidth: 0,                   //{NEW} Integer: Box-model width of individual carousel items, including horizontal borders and padding.
   itemMargin: 0,                  //{NEW} Integer: Margin between carousel items.
   minItems: 1,                    //{NEW} Integer: Minimum number of carousel items that should be visible. Items will resize fluidly when below this.
   maxItems: 0,                    //{NEW} Integer: Maxmimum number of carousel items that should be visible. Items will resize fluidly when above this limit.
   move: 0,                        //{NEW} Integer: Number of carousel items that should move on animation. If 0, slider will move all visible items.
   allowOneSlide: true,           //{NEW} Boolean: Whether or not to allow a slider comprised of a single slide

   // Callback API
   start: function(){},            //Callback: function(slider) - Fires when the slider loads the first slide
   before: function(){},           //Callback: function(slider) - Fires asynchronously with each slider animation
   after: function(){},            //Callback: function(slider) - Fires after each slider animation completes
   end: function(){},              //Callback: function(slider) - Fires when the slider reaches the last slide (asynchronous)
   added: function(){},            //{NEW} Callback: function(slider) - Fires after a slide is added
   removed: function(){}           //{NEW} Callback: function(slider) - Fires after a slide is removed
 }

 //FlexSlider: Plugin Function
 $.fn.flexslider = function(options) {
   if (options === undefined) options = {};

   if (typeof options === "object") {
     return this.each(function() {
       var $this = $(this),
           selector = (options.selector) ? options.selector : ".slides > li",
           $slides = $this.find(selector);

     if ( ( $slides.length === 1 && options.allowOneSlide === true ) || $slides.length === 0 ) {
         $slides.fadeIn(400);
         if (options.start) options.start($this);
       } else if ($this.data('flexslider') === undefined) {
         new $.flexslider(this, options);
       }
     });
   } else {
     // Helper strings to quickly perform functions on the slider
     var $slider = $(this).data('flexslider');
     switch (options) {
       case "play": $slider.play(); break;
       case "pause": $slider.pause(); break;
       case "stop": $slider.stop(); break;
       case "next": $slider.flexAnimate($slider.getTarget("next"), true); break;
       case "prev":
       case "previous": $slider.flexAnimate($slider.getTarget("prev"), true); break;
       default: if (typeof options === "number") $slider.flexAnimate(options, true);
     }
   }
 }

})(jQuery);