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      \_/     \/    @ligmakokz

Editing: jquery-mousewheel.js

/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
 * Licensed under the MIT License (LICENSE.txt).
 *
 * Version: 3.1.9
 *
 * Requires: jQuery 1.2.2+
 */

var toFix  = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
        toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
                    ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
        slice  = Array.prototype.slice,
        nullLowestDeltaTimeout, lowestDelta;

if ( $.event.fixHooks ) {
        for ( var i = toFix.length; i; ) {
            $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
        }
    }

var special = $.event.special.mousewheel = {
        version: '3.1.9',

setup: function() {
            if ( this.addEventListener ) {
                for ( var i = toBind.length; i; ) {
                    this.addEventListener( toBind[--i], handler, false );
                }
            } else {
                this.onmousewheel = handler;
            }
            // Store the line height and page height for this particular element
            $.data(this, 'mousewheel-line-height', special.getLineHeight(this));
            $.data(this, 'mousewheel-page-height', special.getPageHeight(this));
        },

teardown: function() {
            if ( this.removeEventListener ) {
                for ( var i = toBind.length; i; ) {
                    this.removeEventListener( toBind[--i], handler, false );
                }
            } else {
                this.onmousewheel = null;
            }
        },

getLineHeight: function(elem) {
            return parseInt($(elem)['offsetParent' in $.fn ? 'offsetParent' : 'parent']().css('fontSize'), 10);
        },

getPageHeight: function(elem) {
            return $(elem).height();
        },

settings: {
            adjustOldDeltas: true
        }
    };

$.fn.extend({
        mousewheel: function(fn) {
            return fn ? this.bind('mousewheel', fn) : this.trigger('mousewheel');
        },

unmousewheel: function(fn) {
            return this.unbind('mousewheel', fn);
        }
    });

function handler(event) {
        var orgEvent   = event || window.event,
            args       = slice.call(arguments, 1),
            delta      = 0,
            deltaX     = 0,
            deltaY     = 0,
            absDelta   = 0;
        event = $.event.fix(orgEvent);
        event.type = 'mousewheel';

// Old school scrollwheel delta
        if ( 'detail'      in orgEvent ) { deltaY = orgEvent.detail * -1;      }
        if ( 'wheelDelta'  in orgEvent ) { deltaY = orgEvent.wheelDelta;       }
        if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY;      }
        if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }

// Firefox < 17 horizontal scrolling related to DOMMouseScroll event
        if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
            deltaX = deltaY * -1;
            deltaY = 0;
        }

// Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
        delta = deltaY === 0 ? deltaX : deltaY;

// New school wheel delta (wheel event)
        if ( 'deltaY' in orgEvent ) {
            deltaY = orgEvent.deltaY * -1;
            delta  = deltaY;
        }
        if ( 'deltaX' in orgEvent ) {
            deltaX = orgEvent.deltaX;
            if ( deltaY === 0 ) { delta  = deltaX * -1; }
        }

// No change actually happened, no reason to go any further
        if ( deltaY === 0 && deltaX === 0 ) { return; }

// Need to convert lines and pages to pixels if we aren't already in pixels
        // There are three delta modes:
        //   * deltaMode 0 is by pixels, nothing to do
        //   * deltaMode 1 is by lines
        //   * deltaMode 2 is by pages
        if ( orgEvent.deltaMode === 1 ) {
            var lineHeight = $.data(this, 'mousewheel-line-height');
            delta  *= lineHeight;
            deltaY *= lineHeight;
            deltaX *= lineHeight;
        } else if ( orgEvent.deltaMode === 2 ) {
            var pageHeight = $.data(this, 'mousewheel-page-height');
            delta  *= pageHeight;
            deltaY *= pageHeight;
            deltaX *= pageHeight;
        }

// Store lowest absolute delta to normalize the delta values
        absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );

if ( !lowestDelta || absDelta < lowestDelta ) {
            lowestDelta = absDelta;

// Adjust older deltas if necessary
            if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
                lowestDelta /= 40;
            }
        }

// Adjust older deltas if necessary
        if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
            // Divide all the things by 40!
            delta  /= 40;
            deltaX /= 40;
            deltaY /= 40;
        }

// Get a whole, normalized value for the deltas
        delta  = Math[ delta  >= 1 ? 'floor' : 'ceil' ](delta  / lowestDelta);
        deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
        deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);

// Add information to the event object
        event.deltaX = deltaX;
        event.deltaY = deltaY;
        event.deltaFactor = lowestDelta;
        // Go ahead and set deltaMode to 0 since we converted to pixels
        // Although this is a little odd since we overwrite the deltaX/Y
        // properties with normalized deltas.
        event.deltaMode = 0;

// Add event and delta to the front of the arguments
        args.unshift(event, delta, deltaX, deltaY);

// Clearout lowestDelta after sometime to better
        // handle multiple device types that give different
        // a different lowestDelta
        // Ex: trackpad = 3 and mouse wheel = 120
        if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
        nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);

return ($.event.dispatch || $.event.handle).apply(this, args);
    }

function nullLowestDelta() {
        lowestDelta = null;
    }

function shouldAdjustOldDeltas(orgEvent, absDelta) {
        // If this is an older event and the delta is divisable by 120,
        // then we are assuming that the browser is treating this as an
        // older mouse wheel event and that we should divide the deltas
        // by 40 to try and get a more usable deltaFactor.
        // Side note, this actually impacts the reported scroll distance
        // in older browsers and can cause scrolling to be slower than native.
        // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
        return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
    }

}));

Name	Type	Actions
jquery-mousewheel.js	File