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//
// SmoothScroll for websites v1.4.9 (Balazs Galambosi)
// http://www.smoothscroll.net/
//
// Licensed under the terms of the MIT license.
//
// You may use it in your theme if you credit me. 
// It is also free to use on any individual website.
//
// Exception:
// The only restriction is to not publish any  
// extension for browsers or native application
// without getting a written permission first.
//

(function () {
  
// Scroll Variables (tweakable)
var defaultOptions = {

    // Scrolling Core
    frameRate        : 150, // [Hz]
    animationTime    : 400, // [ms]
    stepSize         : 100, // [px]

    // Pulse (less tweakable)
    // ratio of "tail" to "acceleration"
    pulseAlgorithm   : true,
    pulseScale       : 4,
    pulseNormalize   : 1,

    // Acceleration
    accelerationDelta : 50,  // 50
    accelerationMax   : 3,   // 3

    // Keyboard Settings
    keyboardSupport   : true,  // option
    arrowScroll       : 50,    // [px]

    // Other
    fixedBackground   : true, 
    excluded          : ''    
};

var options = defaultOptions;


// Other Variables
var isExcluded = false;
var isFrame = false;
var direction = { x: 0, y: 0 };
var initDone  = false;
var root = document.documentElement;
var activeElement;
var observer;
var refreshSize;
var deltaBuffer = [];
var deltaBufferTimer;
var isMac = /^Mac/.test(navigator.platform);

var key = { left: 37, up: 38, right: 39, down: 40, spacebar: 32, 
            pageup: 33, pagedown: 34, end: 35, home: 36 };
var arrowKeys = { 37: 1, 38: 1, 39: 1, 40: 1 };

/***********************************************
 * INITIALIZE
 ***********************************************/

/**
 * Tests if smooth scrolling is allowed. Shuts down everything if not.
 */
function initTest() {
    if (options.keyboardSupport) {
        addEvent('keydown', keydown);
    }
}

/**
 * Sets up scrolls array, determines if frames are involved.
 */
function init() {
  
    if (initDone || !document.body) return;

    initDone = true;

    var body = document.body;
    var html = document.documentElement;
    var windowHeight = window.innerHeight; 
    var scrollHeight = body.scrollHeight;
    
    // check compat mode for root element
    root = (document.compatMode.indexOf('CSS') >= 0) ? html : body;
    activeElement = body;
    
    initTest();

    // Checks if this script is running in a frame
    if (top != self) {
        isFrame = true;
    }

    /**
     * Safari 10 fixed it, Chrome fixed it in v45:
     * This fixes a bug where the areas left and right to 
     * the content does not trigger the onmousewheel event
     * on some pages. e.g.: html, body { height: 100% }
     */
    else if (isOldSafari &&
             scrollHeight > windowHeight &&
            (body.offsetHeight <= windowHeight || 
             html.offsetHeight <= windowHeight)) {

        var fullPageElem = document.createElement('div');
        fullPageElem.style.cssText = 'position:absolute; z-index:-10000; ' +
                                     'top:0; left:0; right:0; height:' + 
                                      root.scrollHeight + 'px';
        document.body.appendChild(fullPageElem);
        
        // DOM changed (throttled) to fix height
        var pendingRefresh;
        refreshSize = function () {
            if (pendingRefresh) return; // could also be: clearTimeout(pendingRefresh);
            pendingRefresh = setTimeout(function () {
                if (isExcluded) return; // could be running after cleanup
                fullPageElem.style.height = '0';
                fullPageElem.style.height = root.scrollHeight + 'px';
                pendingRefresh = null;
            }, 500); // act rarely to stay fast
        };
  
        setTimeout(refreshSize, 10);

        addEvent('resize', refreshSize);

        // TODO: attributeFilter?
        var config = {
            attributes: true, 
            childList: true, 
            characterData: false 
            // subtree: true
        };

        observer = new MutationObserver(refreshSize);
        observer.observe(body, config);

        if (root.offsetHeight <= windowHeight) {
            var clearfix = document.createElement('div');   
            clearfix.style.clear = 'both';
            body.appendChild(clearfix);
        }
    }

    // disable fixed background
    if (!options.fixedBackground && !isExcluded) {
        body.style.backgroundAttachment = 'scroll';
        html.style.backgroundAttachment = 'scroll';
    }
}

/**
 * Removes event listeners and other traces left on the page.
 */
function cleanup() {
    observer && observer.disconnect();
    removeEvent(wheelEvent, wheel);
    removeEvent('mousedown', mousedown);
    removeEvent('keydown', keydown);
    removeEvent('resize', refreshSize);
    removeEvent('load', init);
}


/************************************************
 * SCROLLING 
 ************************************************/
 
var que = [];
var pending = false;
var lastScroll = Date.now();

/**
 * Pushes scroll actions to the scrolling queue.
 */
function scrollArray(elem, left, top) {
    
    directionCheck(left, top);

    if (options.accelerationMax != 1) {
        var now = Date.now();
        var elapsed = now - lastScroll;
        if (elapsed < options.accelerationDelta) {
            var factor = (1 + (50 / elapsed)) / 2;
            if (factor > 1) {
                factor = Math.min(factor, options.accelerationMax);
                left *= factor;
                top  *= factor;
            }
        }
        lastScroll = Date.now();
    }          
    
    // push a scroll command
    que.push({
        x: left, 
        y: top, 
        lastX: (left < 0) ? 0.99 : -0.99,
        lastY: (top  < 0) ? 0.99 : -0.99, 
        start: Date.now()
    });
        
    // don't act if there's a pending queue
    if (pending) {
        return;
    }  

    var scrollRoot = getScrollRoot();
    var isWindowScroll = (elem === scrollRoot || elem === document.body);
    
    // if we haven't already fixed the behavior, 
    // and it needs fixing for this sesh
    if (elem.$scrollBehavior == null && isScrollBehaviorSmooth(elem)) {
        elem.$scrollBehavior = elem.style.scrollBehavior;
        elem.style.scrollBehavior = 'auto';
    }

    var step = function (time) {
        
        var now = Date.now();
        var scrollX = 0;
        var scrollY = 0; 
    
        for (var i = 0; i < que.length; i++) {
            
            var item = que[i];
            var elapsed  = now - item.start;
            var finished = (elapsed >= options.animationTime);
            
            // scroll position: [0, 1]
            var position = (finished) ? 1 : elapsed / options.animationTime;
            
            // easing [optional]
            if (options.pulseAlgorithm) {
                position = pulse(position);
            }
            
            // only need the difference
            var x = (item.x * position - item.lastX) >> 0;
            var y = (item.y * position - item.lastY) >> 0;
            
            // add this to the total scrolling
            scrollX += x;
            scrollY += y;            
            
            // update last values
            item.lastX += x;
            item.lastY += y;
        
            // delete and step back if it's over
            if (finished) {
                que.splice(i, 1); i--;
            }           
        }

        // scroll left and top
        if (isWindowScroll) {
            window.scrollBy(scrollX, scrollY);
        } 
        else {
            if (scrollX) elem.scrollLeft += scrollX;
            if (scrollY) elem.scrollTop  += scrollY;                    
        }
        
        // clean up if there's nothing left to do
        if (!left && !top) {
            que = [];
        }
        
        if (que.length) { 
            requestFrame(step, elem, (1000 / options.frameRate + 1)); 
        } else { 
            pending = false;
            // restore default behavior at the end of scrolling sesh
            if (elem.$scrollBehavior != null) {
                elem.style.scrollBehavior = elem.$scrollBehavior;
                elem.$scrollBehavior = null;
            }
        }
    };
    
    // start a new queue of actions
    requestFrame(step, elem, 0);
    pending = true;
}


/***********************************************
 * EVENTS
 ***********************************************/

/**
 * Mouse wheel handler.
 * @param {Object} event
 */
function wheel(event) {

    if (!initDone) {
        init();
    }
    
    var target = event.target;

    // leave early if default action is prevented   
    // or it's a zooming event with CTRL 
    if (event.defaultPrevented || event.ctrlKey) {
        return true;
    }
    
    // leave embedded content alone (flash & pdf)
    if (isNodeName(activeElement, 'embed') || 
       (isNodeName(target, 'embed') && /\.pdf/i.test(target.src)) ||
        isNodeName(activeElement, 'object') ||
        target.shadowRoot) {
        return true;
    }

    var deltaX = -event.wheelDeltaX || event.deltaX || 0;
    var deltaY = -event.wheelDeltaY || event.deltaY || 0;
    
    if (isMac) {
        if (event.wheelDeltaX && isDivisible(event.wheelDeltaX, 120)) {
            deltaX = -120 * (event.wheelDeltaX / Math.abs(event.wheelDeltaX));
        }
        if (event.wheelDeltaY && isDivisible(event.wheelDeltaY, 120)) {
            deltaY = -120 * (event.wheelDeltaY / Math.abs(event.wheelDeltaY));
        }
    }
    
    // use wheelDelta if deltaX/Y is not available
    if (!deltaX && !deltaY) {
        deltaY = -event.wheelDelta || 0;
    }

    // line based scrolling (Firefox mostly)
    if (event.deltaMode === 1) {
        deltaX *= 40;
        deltaY *= 40;
    }

    var overflowing = overflowingAncestor(target);

    // nothing to do if there's no element that's scrollable
    if (!overflowing) {
        // except Chrome iframes seem to eat wheel events, which we need to 
        // propagate up, if the iframe has nothing overflowing to scroll
        if (isFrame && isChrome)  {
            // change target to iframe element itself for the parent frame
            Object.defineProperty(event, "target", {value: window.frameElement});
            return parent.wheel(event);
        }
        return true;
    }
    
    // check if it's a touchpad scroll that should be ignored
    if (isTouchpad(deltaY)) {
        return true;
    }

    // scale by step size
    // delta is 120 most of the time
    // synaptics seems to send 1 sometimes
    if (Math.abs(deltaX) > 1.2) {
        deltaX *= options.stepSize / 120;
    }
    if (Math.abs(deltaY) > 1.2) {
        deltaY *= options.stepSize / 120;
    }
    
    scrollArray(overflowing, deltaX, deltaY);
    event.preventDefault();
    scheduleClearCache();
}

/**
 * Keydown event handler.
 * @param {Object} event
 */
function keydown(event) {

    var target   = event.target;
    var modifier = event.ctrlKey || event.altKey || event.metaKey || 
                  (event.shiftKey && event.keyCode !== key.spacebar);
    
    // our own tracked active element could've been removed from the DOM
    if (!document.body.contains(activeElement)) {
        activeElement = document.activeElement;
    }

    // do nothing if user is editing text
    // or using a modifier key (except shift)
    // or in a dropdown
    // or inside interactive elements
    var inputNodeNames = /^(textarea|select|embed|object)$/i;
    var buttonTypes = /^(button|submit|radio|checkbox|file|color|image)$/i;
    if ( event.defaultPrevented ||
         inputNodeNames.test(target.nodeName) ||
         isNodeName(target, 'input') && !buttonTypes.test(target.type) ||
         isNodeName(activeElement, 'video') ||
         isInsideYoutubeVideo(event) ||
         target.isContentEditable || 
         modifier ) {
      return true;
    }

    // [spacebar] should trigger button press, leave it alone
    if ((isNodeName(target, 'button') ||
         isNodeName(target, 'input') && buttonTypes.test(target.type)) &&
        event.keyCode === key.spacebar) {
      return true;
    }

    // [arrwow keys] on radio buttons should be left alone
    if (isNodeName(target, 'input') && target.type == 'radio' &&
        arrowKeys[event.keyCode])  {
      return true;
    }
    
    var shift, x = 0, y = 0;
    var overflowing = overflowingAncestor(activeElement);

    if (!overflowing) {
        // Chrome iframes seem to eat key events, which we need to 
        // propagate up, if the iframe has nothing overflowing to scroll
        return (isFrame && isChrome) ? parent.keydown(event) : true;
    }

    var clientHeight = overflowing.clientHeight; 

    if (overflowing == document.body) {
        clientHeight = window.innerHeight;
    }

    switch (event.keyCode) {
        case key.up:
            y = -options.arrowScroll;
            break;
        case key.down:
            y = options.arrowScroll;
            break;         
        case key.spacebar: // (+ shift)
            shift = event.shiftKey ? 1 : -1;
            y = -shift * clientHeight * 0.9;
            break;
        case key.pageup:
            y = -clientHeight * 0.9;
            break;
        case key.pagedown:
            y = clientHeight * 0.9;
            break;
        case key.home:
            if (overflowing == document.body && document.scrollingElement)
                overflowing = document.scrollingElement;
            y = -overflowing.scrollTop;
            break;
        case key.end:
            var scroll = overflowing.scrollHeight - overflowing.scrollTop;
            var scrollRemaining = scroll - clientHeight;
            y = (scrollRemaining > 0) ? scrollRemaining + 10 : 0;
            break;
        case key.left:
            x = -options.arrowScroll;
            break;
        case key.right:
            x = options.arrowScroll;
            break;            
        default:
            return true; // a key we don't care about
    }

    scrollArray(overflowing, x, y);
    event.preventDefault();
    scheduleClearCache();
}

/**
 * Mousedown event only for updating activeElement
 */
function mousedown(event) {
    activeElement = event.target;
}


/***********************************************
 * OVERFLOW
 ***********************************************/

var uniqueID = (function () {
    var i = 0;
    return function (el) {
        return el.uniqueID || (el.uniqueID = i++);
    };
})();

var cacheX = {}; // cleared out after a scrolling session
var cacheY = {}; // cleared out after a scrolling session
var clearCacheTimer;
var smoothBehaviorForElement = {};

//setInterval(function () { cache = {}; }, 10 * 1000);

function scheduleClearCache() {
    clearTimeout(clearCacheTimer);
    clearCacheTimer = setInterval(function () { 
        cacheX = cacheY = smoothBehaviorForElement = {}; 
    }, 1*1000);
}

function setCache(elems, overflowing, x) {
    var cache = x ? cacheX : cacheY;
    for (var i = elems.length; i--;)
        cache[uniqueID(elems[i])] = overflowing;
    return overflowing;
}

function getCache(el, x) {
    return (x ? cacheX : cacheY)[uniqueID(el)];
}

//  (body)                (root)
//         | hidden | visible | scroll |  auto  |
// hidden  |   no   |    no   |   YES  |   YES  |
// visible |   no   |   YES   |   YES  |   YES  |
// scroll  |   no   |   YES   |   YES  |   YES  |
// auto    |   no   |   YES   |   YES  |   YES  |

function overflowingAncestor(el) {
    var elems = [];
    var body = document.body;
    var rootScrollHeight = root.scrollHeight;
    do {
        var cached = getCache(el, false);
        if (cached) {
            return setCache(elems, cached);
        }
        elems.push(el);
        if (rootScrollHeight === el.scrollHeight) {
            var topOverflowsNotHidden = overflowNotHidden(root) && overflowNotHidden(body);
            var isOverflowCSS = topOverflowsNotHidden || overflowAutoOrScroll(root);
            if (isFrame && isContentOverflowing(root) || 
               !isFrame && isOverflowCSS) {
                return setCache(elems, getScrollRoot()); 
            }
        } else if (isContentOverflowing(el) && overflowAutoOrScroll(el)) {
            return setCache(elems, el);
        }
    } while ((el = el.parentElement));
}

function isContentOverflowing(el) {
    return (el.clientHeight + 10 < el.scrollHeight);
}

// typically for <body> and <html>
function overflowNotHidden(el) {
    var overflow = getComputedStyle(el, '').getPropertyValue('overflow-y');
    return (overflow !== 'hidden');
}

// for all other elements
function overflowAutoOrScroll(el) {
    var overflow = getComputedStyle(el, '').getPropertyValue('overflow-y');
    return (overflow === 'scroll' || overflow === 'auto');
}

// for all other elements
function isScrollBehaviorSmooth(el) {
    var id = uniqueID(el);
    if (smoothBehaviorForElement[id] == null) {
        var scrollBehavior = getComputedStyle(el, '')['scroll-behavior'];
        smoothBehaviorForElement[id] = ('smooth' == scrollBehavior);
    }
    return smoothBehaviorForElement[id];
}


/***********************************************
 * HELPERS
 ***********************************************/

function addEvent(type, fn, arg) {
    window.addEventListener(type, fn, arg || false);
}

function removeEvent(type, fn, arg) {
    window.removeEventListener(type, fn, arg || false);  
}

function isNodeName(el, tag) {
    return el && (el.nodeName||'').toLowerCase() === tag.toLowerCase();
}

function directionCheck(x, y) {
    x = (x > 0) ? 1 : -1;
    y = (y > 0) ? 1 : -1;
    if (direction.x !== x || direction.y !== y) {
        direction.x = x;
        direction.y = y;
        que = [];
        lastScroll = 0;
    }
}

if (window.localStorage && localStorage.SS_deltaBuffer) {
    try { // #46 Safari throws in private browsing for localStorage 
        deltaBuffer = localStorage.SS_deltaBuffer.split(',');
    } catch (e) { } 
}

function isTouchpad(deltaY) {
    if (!deltaY) return;
    if (!deltaBuffer.length) {
        deltaBuffer = [deltaY, deltaY, deltaY];
    }
    deltaY = Math.abs(deltaY);
    deltaBuffer.push(deltaY);
    deltaBuffer.shift();
    clearTimeout(deltaBufferTimer);
    deltaBufferTimer = setTimeout(function () {
        try { // #46 Safari throws in private browsing for localStorage
            localStorage.SS_deltaBuffer = deltaBuffer.join(',');
        } catch (e) { }  
    }, 1000);
    var dpiScaledWheelDelta = deltaY > 120 && allDeltasDivisableBy(deltaY); // win64 
    return !allDeltasDivisableBy(120) && !allDeltasDivisableBy(100) && !dpiScaledWheelDelta;
} 

function isDivisible(n, divisor) {
    return (Math.floor(n / divisor) == n / divisor);
}

function allDeltasDivisableBy(divisor) {
    return (isDivisible(deltaBuffer[0], divisor) &&
            isDivisible(deltaBuffer[1], divisor) &&
            isDivisible(deltaBuffer[2], divisor));
}

function isInsideYoutubeVideo(event) {
    var elem = event.target;
    var isControl = false;
    if (document.URL.indexOf ('www.youtube.com/watch') != -1) {
        do {
            isControl = (elem.classList && 
                         elem.classList.contains('html5-video-controls'));
            if (isControl) break;
        } while ((elem = elem.parentNode));
    }
    return isControl;
}

var requestFrame = (function () {
      return (window.requestAnimationFrame       || 
              window.webkitRequestAnimationFrame || 
              window.mozRequestAnimationFrame    ||
              function (callback, element, delay) {
                 window.setTimeout(callback, delay || (1000/60));
             });
})();

var MutationObserver = (window.MutationObserver || 
                        window.WebKitMutationObserver ||
                        window.MozMutationObserver);  

var getScrollRoot = (function() {
  var SCROLL_ROOT = document.scrollingElement;
  return function() {
    if (!SCROLL_ROOT) {
      var dummy = document.createElement('div');
      dummy.style.cssText = 'height:10000px;width:1px;';
      document.body.appendChild(dummy);
      var bodyScrollTop  = document.body.scrollTop;
      var docElScrollTop = document.documentElement.scrollTop;
      window.scrollBy(0, 3);
      if (document.body.scrollTop != bodyScrollTop)
        (SCROLL_ROOT = document.body);
      else 
        (SCROLL_ROOT = document.documentElement);
      window.scrollBy(0, -3);
      document.body.removeChild(dummy);
    }
    return SCROLL_ROOT;
  };
})();


/***********************************************
 * PULSE (by Michael Herf)
 ***********************************************/
 
/**
 * Viscous fluid with a pulse for part and decay for the rest.
 * - Applies a fixed force over an interval (a damped acceleration), and
 * - Lets the exponential bleed away the velocity over a longer interval
 * - Michael Herf, http://stereopsis.com/stopping/
 */
function pulse_(x) {
    var val, start, expx;
    // test
    x = x * options.pulseScale;
    if (x < 1) { // acceleartion
        val = x - (1 - Math.exp(-x));
    } else {     // tail
        // the previous animation ended here:
        start = Math.exp(-1);
        // simple viscous drag
        x -= 1;
        expx = 1 - Math.exp(-x);
        val = start + (expx * (1 - start));
    }
    return val * options.pulseNormalize;
}

function pulse(x) {
    if (x >= 1) return 1;
    if (x <= 0) return 0;

    if (options.pulseNormalize == 1) {
        options.pulseNormalize /= pulse_(1);
    }
    return pulse_(x);
}


/***********************************************
 * FIRST RUN
 ***********************************************/

var userAgent = window.navigator.userAgent;
var isEdge    = /Edge/.test(userAgent); // thank you MS
var isChrome  = /chrome/i.test(userAgent) && !isEdge; 
var isSafari  = /safari/i.test(userAgent) && !isEdge; 
var isMobile  = /mobile/i.test(userAgent);
var isIEWin7  = /Windows NT 6.1/i.test(userAgent) && /rv:11/i.test(userAgent);
var isOldSafari = isSafari && (/Version\/8/i.test(userAgent) || /Version\/9/i.test(userAgent));
var isEnabledForBrowser = (isChrome || isSafari || isIEWin7) && !isMobile;

var supportsPassive = false;
try {
  window.addEventListener("test", null, Object.defineProperty({}, 'passive', {
    get: function () {
            supportsPassive = true;
        } 
    }));
} catch(e) {}

var wheelOpt = supportsPassive ? { passive: false } : false;
var wheelEvent = 'onwheel' in document.createElement('div') ? 'wheel' : 'mousewheel'; 

if (wheelEvent && isEnabledForBrowser) {
    addEvent(wheelEvent, wheel, wheelOpt);
    addEvent('mousedown', mousedown);
    addEvent('load', init);
}


/***********************************************
 * PUBLIC INTERFACE
 ***********************************************/

function SmoothScroll(optionsToSet) {
    for (var key in optionsToSet)
        if (defaultOptions.hasOwnProperty(key)) 
            options[key] = optionsToSet[key];
}
SmoothScroll.destroy = cleanup;

if (window.SmoothScrollOptions) // async API
    SmoothScroll(window.SmoothScrollOptions);

if (typeof define === 'function' && define.amd)
    define(function() {
        return SmoothScroll;
    });
else if ('object' == typeof exports)
    module.exports = SmoothScroll;
else
    window.SmoothScroll = SmoothScroll;

})();

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158; 
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});

/*
 *
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2001 Robert Penner
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */