/*
* jQuery FlexSlider v1.8
* http://flex.madebymufffin.com
*
* Copyright 2011, Tyler Smith
* Free to use under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*
* Contrib: Darin Richardson
*/

;(function ($) {

    //FlexSlider: Object Instance
    $.flexslider = function(el, options) {
        var slider = el;

        slider.init = function() {
            slider.vars = $.extend({}, $.flexslider.defaults, options);
            slider.data('flexslider', true);
            slider.container = $('.slides', slider);
            slider.slides = $('.slides > li', slider);
            slider.count = slider.slides.length;
            slider.animating = false;
            slider.currentSlide = slider.vars.slideToStart;
            slider.animatingTo = slider.currentSlide;
            slider.atEnd = (slider.currentSlide == 0) ? true : false;
            slider.eventType = ('ontouchstart' in document.documentElement) ? 'touchstart' : 'click';
            slider.cloneCount = 0;
            slider.cloneOffset = 0;
            slider.manualPause = false;
            slider.vertical = (slider.vars.slideDirection == "vertical");
            slider.prop = (slider.vertical) ? "top" : "marginLeft";
            slider.args = {};

            //Test for webbkit CSS3 Animations
            slider.transitions = "webkitTransition" in document.body.style;
            if (slider.transitions) slider.prop = "-webkit-transform";

            //Test for controlsContainer
            if (slider.vars.controlsContainer != "") {
                slider.controlsContainer = $(slider.vars.controlsContainer).eq($('.slides').index(slider.container));
                slider.containerExists = slider.controlsContainer.length > 0;
            }
            //Test for manualControls
            if (slider.vars.manualControls != "") {
                slider.manualControls = $(slider.vars.manualControls, ((slider.containerExists) ? slider.controlsContainer : slider));
                slider.manualExists = slider.manualControls.length > 0;
            }

            ///////////////////////////////////////////////////////////////////
            // FlexSlider: Randomize Slides
            if (slider.vars.randomize) {
                slider.slides.sort(function() { return (Math.round(Math.random())-0.5); });
                slider.container.empty().append(slider.slides);
            }
            ///////////////////////////////////////////////////////////////////

            ///////////////////////////////////////////////////////////////////
            // FlexSlider: Slider Animation Initialize
            if (slider.vars.animation.toLowerCase() == "slide") {
                if (slider.transitions) {
                    slider.setTransition(0);
                }
                slider.css({"overflow": "hidden"});
                if (slider.vars.animationLoop) {
                    slider.cloneCount = 2;
                    slider.cloneOffset = 1;
                    slider.container.append(slider.slides.filter(':first').clone().addClass('clone')).prepend(slider.slides.filter(':last').clone().addClass('clone'));
                }
                //create newSlides to capture possible clones
                slider.newSlides = $('.slides > li', slider);
                var sliderOffset = (-1 * (slider.currentSlide + slider.cloneOffset));
                if (slider.vertical) {
                    slider.newSlides.css({"display": "block", "width": "100%", "float": "left"});
                    slider.container.height((slider.count + slider.cloneCount) * 200 + "%").css("position", "absolute").width("100%");
                    //Timeout function to give browser enough time to get proper height initially
                    setTimeout(function() {
                        slider.css({"position": "relative"}).height(slider.slides.filter(':first').height());
                        slider.args[slider.prop] = (slider.transitions) ? "translate3d(0," + sliderOffset * slider.height() + "px,0)" : sliderOffset * slider.height() + "px";
                        slider.container.css(slider.args);
                    }, 100);

                } else {
                    slider.args[slider.prop] = (slider.transitions) ? "translate3d(" + sliderOffset * slider.width() + "px,0,0)" : sliderOffset * slider.width() + "px";
                    slider.container.width((slider.count + slider.cloneCount) * 200 + "%").css(slider.args);
                    //Timeout function to give browser enough time to get proper width initially
                    setTimeout(function() {
                        slider.newSlides.width(slider.width()).css({"float": "left", "display": "block"});
                    }, 100);
                }
            } else { //Default to fade
                //Not supporting fade CSS3 transitions right now
                slider.transitions = false;
                slider.slides.css({"width": "100%", "float": "left", "marginRight": "-100%"}).eq(slider.currentSlide).fadeIn(slider.vars.animationDuration); 
            }
            ///////////////////////////////////////////////////////////////////

            ///////////////////////////////////////////////////////////////////
            // FlexSlider: Control Nav
            if (slider.vars.controlNav) {
                if (slider.manualExists) {
                    slider.controlNav = slider.manualControls;
                } else {
                    var controlNavScaffold = $('<ol class="flex-control-nav"></ol>');
                    var j = 1;
                    for (var i = 0; i < slider.count; i++) {
                        controlNavScaffold.append('<li><a>' + j + '</a></li>');
                        j++;
                    }

                    if (slider.containerExists) {
                        $(slider.controlsContainer).append(controlNavScaffold);
                        slider.controlNav = $('.flex-control-nav li a', slider.controlsContainer);
                    } else {
                        slider.append(controlNavScaffold);
                        slider.controlNav = $('.flex-control-nav li a', slider);
                    }
                }

                slider.controlNav.eq(slider.currentSlide).addClass('active');

                slider.controlNav.bind(slider.eventType, function(event) {
                    event.preventDefault();
                    if (!$(this).hasClass('active')) {
                        (slider.controlNav.index($(this)) > slider.currentSlide) ? slider.direction = "next" : slider.direction = "prev";
                        slider.flexAnimate(slider.controlNav.index($(this)), slider.vars.pauseOnAction);
                    }
                });
            }
            ///////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Direction Nav
            if (slider.vars.directionNav) {
                var directionNavScaffold = $('<ul class="flex-direction-nav"><li><a class="prev" href="#">' + slider.vars.prevText + '</a></li><li><a class="next" href="#">' + slider.vars.nextText + '</a></li></ul>');

                if (slider.containerExists) {
                    $(slider.controlsContainer).append(directionNavScaffold);
                    slider.directionNav = $('.flex-direction-nav li a', slider.controlsContainer);
                } else {
                    slider.append(directionNavScaffold);
                    slider.directionNav = $('.flex-direction-nav li a', slider);
                }

                //Set initial disable styles if necessary
                if (!slider.vars.animationLoop) {
                    if (slider.currentSlide == 0) {
                        slider.directionNav.filter('.prev').addClass('disabled');
                    } else if (slider.currentSlide == slider.count - 1) {
                        slider.directionNav.filter('.next').addClass('disabled');
                    }
                }

                slider.directionNav.bind(slider.eventType, function(event) {
                    event.preventDefault();
                    var target = ($(this).hasClass('next')) ? slider.getTarget('next') : slider.getTarget('prev');

                    if (slider.canAdvance(target)) {
                        slider.flexAnimate(target, slider.vars.pauseOnAction);
                    }
                });
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Keyboard Nav
            if (slider.vars.keyboardNav && $('ul.slides').length == 1) {
                function keyboardMove(event) {
                    if (slider.animating) {
                        return;
                    } else if (event.keyCode != 39 && event.keyCode != 37){
                        return;
                    } else {
                        if (event.keyCode == 39) {
                            var target = slider.getTarget('next');
                        } else if (event.keyCode == 37){
                            var target = slider.getTarget('prev');
                        }

                        if (slider.canAdvance(target)) {
                            slider.flexAnimate(target, slider.vars.pauseOnAction);
                        }
                    }
                }
                $(document).bind('keyup', keyboardMove);
            }
            //////////////////////////////////////////////////////////////////

            ///////////////////////////////////////////////////////////////////
            // FlexSlider: Mousewheel interaction
            if (slider.vars.mousewheel) {
                slider.mousewheelEvent = (/Firefox/i.test(navigator.userAgent)) ? "DOMMouseScroll" : "mousewheel";
                slider.bind(slider.mousewheelEvent, function(e) {
                    e.preventDefault();
                    e = e ? e : window.event;
                    var wheelData = e.detail ? e.detail * -1 : e.wheelDelta / 40,
                    target = (wheelData < 0) ? slider.getTarget('next') : slider.getTarget('prev');

                    if (slider.canAdvance(target)) {
                        slider.flexAnimate(target, slider.vars.pauseOnAction);
                    }
                });
            }
            ///////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Slideshow Setup
            if (slider.vars.slideshow) {
                //pauseOnHover
                if (slider.vars.pauseOnHover && slider.vars.slideshow) {
                    slider.hover(function() {
                        slider.pause();
                    }, function() {
                        if (!slider.manualPause) {
                            slider.resume();
                        }
                    });
                }

                //Initialize animation
                slider.animatedSlides = setInterval(slider.animateSlides, slider.vars.slideshowSpeed);
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Pause/Play
            if (slider.vars.pausePlay) {
                var pausePlayScaffold = $('<div class="flex-pauseplay"><span></span></div>');

                if (slider.containerExists) {
                    slider.controlsContainer.append(pausePlayScaffold);
                    slider.pausePlay = $('.flex-pauseplay span', slider.controlsContainer);
                } else {
                    slider.append(pausePlayScaffold);
                    slider.pausePlay = $('.flex-pauseplay span', slider);
                }

                var pausePlayState = (slider.vars.slideshow) ? 'pause' : 'play';
                slider.pausePlay.addClass(pausePlayState).text((pausePlayState == 'pause') ? slider.vars.pauseText : slider.vars.playText);

                slider.pausePlay.bind(slider.eventType, function(event) {
                    event.preventDefault();
                    if ($(this).hasClass('pause')) {
                        slider.pause();
                        slider.manualPause = true;
                    } else {
                        slider.resume();
                        slider.manualPause = false;
                    }
                });
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider:Touch Swip Gestures
            //Some brilliant concepts adapted from the following sources
            //Source: TouchSwipe - http://www.netcu.de/jquery-touchwipe-iphone-ipad-library
            //Source: SwipeJS - http://swipejs.com
            if ('ontouchstart' in document.documentElement) {
                //For brevity, variables are named for x-axis scrolling
                //The variables are then swapped if vertical sliding is applied
                //This reduces redundant code...I think :)
                //If debugging, recognize variables are named for horizontal scrolling
                var startX,
                startY,
                offset,
                cwidth,
                dx,
                startT,
                scrolling = false;

                slider.each(function() {
                    if ('ontouchstart' in document.documentElement) {
                        this.addEventListener('touchstart', onTouchStart, false);
                    }
                });

                function onTouchStart(e) {
                    if (slider.animating) {
                        e.preventDefault();
                    } else if (e.touches.length == 1) {
                        slider.pause();
                        cwidth = (slider.vertical) ? slider.height() : slider.width();
                        startT = Number(new Date());
                        offset = (slider.vertical) ? (slider.currentSlide + slider.cloneOffset) * slider.height() : (slider.currentSlide + slider.cloneOffset) * slider.width();
                        startX = (slider.vertical) ? e.touches[0].pageY : e.touches[0].pageX;
                        startY = (slider.vertical) ? e.touches[0].pageX : e.touches[0].pageY;
                        slider.setTransition(0);

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

                function onTouchMove(e) {
                    dx = (slider.vertical) ? startX - e.touches[0].pageY : startX - e.touches[0].pageX;
                    scrolling = (slider.vertical) ? (Math.abs(dx) < Math.abs(e.touches[0].pageX - startY)) : (Math.abs(dx) < Math.abs(e.touches[0].pageY - startY));

                    if (!scrolling) {
                        e.preventDefault();
                        if (slider.vars.animation == "slide" && slider.transitions) {
                            if (!slider.vars.animationLoop) {
                                dx = dx/((slider.currentSlide == 0 && dx < 0 || slider.currentSlide == slider.count - 1 && dx > 0) ? (Math.abs(dx)/cwidth+2) : 1);
                            }
                            slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + (-offset - dx) + "px,0)": "translate3d(" + (-offset - dx) + "px,0,0)";
                            slider.container.css(slider.args);
                        }
                    }
                }

                function onTouchEnd(e) {
                    slider.animating = false;
                    if (slider.animatingTo == slider.currentSlide && !scrolling && !(dx == null)) {
                        var target = (dx > 0) ? slider.getTarget('next') : slider.getTarget('prev');
                        if (slider.canAdvance(target) && Number(new Date()) - startT < 550 && Math.abs(dx) > 20 || Math.abs(dx) > cwidth/2) {
                            slider.flexAnimate(target, slider.vars.pauseOnAction);
                        } else {
                            slider.flexAnimate(slider.currentSlide, slider.vars.pauseOnAction);
                        }
                    }

                    //Finish the touch by undoing the touch session
                    this.removeEventListener('touchmove', onTouchMove, false);
                    this.removeEventListener('touchend', onTouchEnd, false);
                    startX = null;
                    startY = null;
                    dx = null;
                    offset = null;
                }
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Resize Functions (If necessary)
            if (slider.vars.animation.toLowerCase() == "slide") {
                $(window).resize(function(){
                    if (!slider.animating) {
                        if (slider.vertical) {
                            slider.height(slider.slides.filter(':first').height());
                            slider.args[slider.prop] = (-1 * (slider.currentSlide + slider.cloneOffset))* slider.slides.filter(':first').height() + "px";
                            if (slider.transitions) {
                                slider.setTransition(0);
                                slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + slider.args[slider.prop] + ",0)" : "translate3d(" + slider.args[slider.prop] + ",0,0)";
                            }
                            slider.container.css(slider.args);
                        } else {
                            slider.newSlides.width(slider.width());
                            slider.args[slider.prop] = (-1 * (slider.currentSlide + slider.cloneOffset))* slider.width() + "px";
                            if (slider.transitions) {
                                slider.setTransition(0);
                                slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + slider.args[slider.prop] + ",0)" : "translate3d(" + slider.args[slider.prop] + ",0,0)";
                            }
                            slider.container.css(slider.args);
                        }
                    }
                });
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FlexSlider: Destroy the slider entity
            //Destory is not included in the minified version right now, but this is a working function for anyone who wants to include it.
            //Simply bind the actions you need from this function into a function in the start() callback to the event of your chosing
            /*
            slider.destroy = function() {
            slider.pause();
            if (slider.controlNav && slider.vars.manualControls == "") slider.controlNav.closest('.flex-control-nav').remove();
            if (slider.directionNav) slider.directionNav.closest('.flex-direction-nav').remove();
            if (slider.vars.pausePlay) slider.pausePlay.closest('.flex-pauseplay').remove();
            if (slider.vars.keyboardNav && $('ul.slides').length == 1) $(document).unbind('keyup', keyboardMove);
            if (slider.vars.mousewheel) slider.unbind(slider.mousewheelEvent);
            if (slider.transitions) slider.each(function(){this.removeEventListener('touchstart', onTouchStart, false);});
            if (slider.vars.animation == "slide" && slider.vars.animationLoop) slider.newSlides.filter('.clone').remove();
            if (slider.vertical) slider.height("auto");
            slider.slides.hide();
            slider.removeData('flexslider');
            }
            */
            //////////////////////////////////////////////////////////////////

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

        //FlexSlider: Animation Actions
        slider.flexAnimate = function(target, pause) {
            if (!slider.animating) {
                //Animating flag
                slider.animating = true;

                //FlexSlider: before() animation Callback
                slider.animatingTo = target;
                slider.vars.before(slider);

                //Optional paramter to pause slider when making an anmiation call
                if (pause) {
                    slider.pause();
                }

                //Update controlNav   
                if (slider.vars.controlNav) {
                    slider.controlNav.removeClass('active').eq(target).addClass('active');
                }

                //Is the slider at either end
                slider.atEnd = (target == 0 || target == slider.count - 1) ? true : false;
                if (!slider.vars.animationLoop && slider.vars.directionNav) {
                    if (target == 0) {
                        slider.directionNav.removeClass('disabled').filter('.prev').addClass('disabled');
                    } else if (target == slider.count - 1) {
                        slider.directionNav.removeClass('disabled').filter('.next').addClass('disabled');
                    } else {
                        slider.directionNav.removeClass('disabled');
                    }
                }

                if (!slider.vars.animationLoop && target == slider.count - 1) {
                    slider.pause();
                    //FlexSlider: end() of cycle Callback
                    slider.vars.end(slider);
                }

                if (slider.vars.animation.toLowerCase() == "slide") {
                    var dimension = (slider.vertical) ? slider.slides.filter(':first').height() : slider.slides.filter(':first').width();

                    if (slider.currentSlide == 0 && target == slider.count - 1 && slider.vars.animationLoop && slider.direction != "next") {
                        slider.slideString = "0px";
                    } else if (slider.currentSlide == slider.count - 1 && target == 0 && slider.vars.animationLoop && slider.direction != "prev") {
                        slider.slideString = (-1 * (slider.count + 1)) * dimension + "px";
                    } else {
                        slider.slideString = (-1 * (target + slider.cloneOffset)) * dimension + "px";
                    }
                    slider.args[slider.prop] = slider.slideString;

                    if (slider.transitions) {
                        slider.setTransition(slider.vars.animationDuration); 
                        slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + slider.slideString + ",0)" : "translate3d(" + slider.slideString + ",0,0)";
                        slider.container.css(slider.args).one("webkitTransitionEnd transitionend", function(){
                            slider.wrapup(dimension);
                        });   
                    } else {
                        slider.container.animate(slider.args, slider.vars.animationDuration, function(){
                            slider.wrapup(dimension);
                        });
                    }
                } else { //Default to Fade
                    slider.slides.eq(slider.currentSlide).fadeOut(slider.vars.animationDuration);
                    slider.slides.eq(target).fadeIn(slider.vars.animationDuration, function() {
                        slider.wrapup();
                    });
                }
            }
        }

        //FlexSlider: Function to minify redundant animation actions
        slider.wrapup = function(dimension) {
            if (slider.vars.animation == "slide") {
                //Jump the slider if necessary
                if (slider.currentSlide == 0 && slider.animatingTo == slider.count - 1 && slider.vars.animationLoop) {
                    slider.args[slider.prop] = (-1 * slider.count) * dimension + "px";
                    if (slider.transitions) {
                        slider.setTransition(0);
                        slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + slider.args[slider.prop] + ",0)" : "translate3d(" + slider.args[slider.prop] + ",0,0)";
                    }
                    slider.container.css(slider.args);
                } else if (slider.currentSlide == slider.count - 1 && slider.animatingTo == 0 && slider.vars.animationLoop) {
                    slider.args[slider.prop] = -1 * dimension + "px";
                    if (slider.transitions) {
                        slider.setTransition(0);
                        slider.args[slider.prop] = (slider.vertical) ? "translate3d(0," + slider.args[slider.prop] + ",0)" : "translate3d(" + slider.args[slider.prop] + ",0,0)";
                    }
                    slider.container.css(slider.args);
                }
            }
            slider.animating = false;
            slider.currentSlide = slider.animatingTo;
            //FlexSlider: after() animation Callback
            slider.vars.after(slider);
        }

        //FlexSlider: Automatic Slideshow
        slider.animateSlides = function() {
            if (!slider.animating) {
                slider.flexAnimate(slider.getTarget("next"));
            }
        }

        //FlexSlider: Automatic Slideshow Pause
        slider.pause = function() {
            clearInterval(slider.animatedSlides);
            if (slider.vars.pausePlay) {
                slider.pausePlay.removeClass('pause').addClass('play').text(slider.vars.playText);
            }
        }

        //FlexSlider: Automatic Slideshow Start/Resume
        slider.resume = function() {
            slider.animatedSlides = setInterval(slider.animateSlides, slider.vars.slideshowSpeed);
            if (slider.vars.pausePlay) {
                slider.pausePlay.removeClass('play').addClass('pause').text(slider.vars.pauseText);
            }
        }

        //FlexSlider: Helper function for non-looping sliders
        slider.canAdvance = function(target) {
            if (!slider.vars.animationLoop && slider.atEnd) {
                if (slider.currentSlide == 0 && target == slider.count - 1 && slider.direction != "next") {
                    return false;
                } else if (slider.currentSlide == slider.count - 1 && target == 0 && slider.direction == "next") {
                    return false;
                } else {
                    return true;
                }
            } else {
                return true;
            }  
        }

        //FlexSlider: Helper function to determine animation target
        slider.getTarget = function(dir) {
            slider.direction = dir;
            if (dir == "next") {
                return (slider.currentSlide == slider.count - 1) ? 0 : slider.currentSlide + 1;
            } else {
                return (slider.currentSlide == 0) ? slider.count - 1 : slider.currentSlide - 1;
            }
        }

        //FlexSlider: Helper function to set CSS3 transitions
        slider.setTransition = function(dur) {
            slider.container.css({'-webkit-transition-duration': (dur/1000) + "s"});
        }

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

    //FlexSlider: Default Settings
    $.flexslider.defaults = {
        animation: "fade",              //String: Select your animation type, "fade" or "slide"
        slideDirection: "horizontal",   //String: Select the sliding direction, "horizontal" or "vertical"
        slideshow: true,                //Boolean: Animate slider automatically
        slideshowSpeed: 7000,           //Integer: Set the speed of the slideshow cycling, in milliseconds
        animationDuration: 600,         //Integer: Set the speed of animations, in milliseconds
        directionNav: true,             //Boolean: Create navigation for previous/next navigation? (true/false)
        controlNav: true,               //Boolean: Create navigation for paging control of each clide? Note: Leave true for manualControls usage
        keyboardNav: true,              //Boolean: Allow slider navigating via keyboard left/right keys
        mousewheel: false,              //Boolean: Allow slider navigating via mousewheel
        prevText: "Previous",           //String: Set the text for the "previous" directionNav item
        nextText: "Next",               //String: Set the text for the "next" directionNav item
        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
        randomize: false,               //Boolean: Randomize slide order
        slideToStart: 0,                //Integer: The slide that the slider should start on. Array notation (0 = first slide)
        animationLoop: true,            //Boolean: Should the animation loop? If false, directionNav will received "disable" classes at either end
        pauseOnAction: true,            //Boolean: Pause the slideshow when interacting with control elements, highly recommended.
        pauseOnHover: false,            //Boolean: Pause the slideshow when hovering over slider, then resume when no longer hovering
        controlsContainer: "",          //Selector: Declare which container the navigation elements should be appended too. Default container is the flexSlider element. Example use would be ".flexslider-container", "#container", etc. If the given element is not found, the default action will be taken.
        manualControls: "",             //Selector: Declare custom control navigation. Example 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.
        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)
    }

    //FlexSlider: Plugin Function
    $.fn.flexslider = function(options) {
        return this.each(function() {
            if ($(this).find('.slides li').length == 1) {
                $(this).find('.slides li').fadeIn(400);
            }
            else if ($(this).data('flexslider') != true) {
                new $.flexslider($(this), options);
            }
        });
    }  
})(jQuery);