function(e) {

		// Allow dragging only via left mouse button.
		// As this handler is not added in IE8 - we ignore e.which
		// 
		// http://www.quirksmode.org/js/events_properties.html
		// https://developer.mozilla.org/en-US/docs/Web/API/event.button
		if(e.type === 'mousedown' && e.button > 0  ) {
			return;
		}

		if(_initialZoomRunning) {
			e.preventDefault();
			return;
		}

		if(_oldAndroidTouchEndTimeout && e.type === 'mousedown') {
			return;
		}

		if(_preventDefaultEventBehaviour(e, true)) {
			e.preventDefault();
		}



		_shout('pointerDown');

		if(_pointerEventEnabled) {
			var pointerIndex = framework.arraySearch(_currPointers, e.pointerId, 'id');
			if(pointerIndex < 0) {
				pointerIndex = _currPointers.length;
			}
			_currPointers[pointerIndex] = {x:e.pageX, y:e.pageY, id: e.pointerId};
		}
		


		var startPointsList = _getTouchPoints(e),
			numPoints = startPointsList.length;

		_currentPoints = null;

		_stopAllAnimations();

		// init drag
		if(!_isDragging || numPoints === 1) {

			

			_isDragging = _isFirstMove = true;
			framework.bind(window, _upMoveEvents, self);

			_isZoomingIn = 
				_wasOverInitialZoom = 
				_opacityChanged = 
				_verticalDragInitiated = 
				_mainScrollShifted = 
				_moved = 
				_isMultitouch = 
				_zoomStarted = false;

			_direction = null;

			_shout('firstTouchStart', startPointsList);

			_equalizePoints(_startPanOffset, _panOffset);

			_currPanDist.x = _currPanDist.y = 0;
			_equalizePoints(_currPoint, startPointsList[0]);
			_equalizePoints(_startPoint, _currPoint);

			//_equalizePoints(_startMainScrollPos, _mainScrollPos);
			_startMainScrollPos.x = _slideSize.x * _currPositionIndex;

			_posPoints = [{
				x: _currPoint.x,
				y: _currPoint.y
			}];

			_gestureCheckSpeedTime = _gestureStartTime = _getCurrentTime();

			//_mainScrollAnimationEnd(true);
			_calculatePanBounds( _currZoomLevel, true );
			
			// Start rendering
			_stopDragUpdateLoop();
			_dragUpdateLoop();
			
		}

		// init zoom
		if(!_isZooming && numPoints > 1 && !_mainScrollAnimating && !_mainScrollShifted) {
			_startZoomLevel = _currZoomLevel;
			_zoomStarted = false; // true if zoom changed at least once

			_isZooming = _isMultitouch = true;
			_currPanDist.y = _currPanDist.x = 0;

			_equalizePoints(_startPanOffset, _panOffset);

			_equalizePoints(p, startPointsList[0]);
			_equalizePoints(p2, startPointsList[1]);

			_findCenterOfPoints(p, p2, _currCenterPoint);

			_midZoomPoint.x = Math.abs(_currCenterPoint.x) - _panOffset.x;
			_midZoomPoint.y = Math.abs(_currCenterPoint.y) - _panOffset.y;
			_currPointsDistance = _startPointsDistance = _calculatePointsDistance(p, p2);
		}


	}
function(e) {

		// Allow dragging only via left mouse button.
		// As this handler is not added in IE8 - we ignore e.which
		// 
		// http://www.quirksmode.org/js/events_properties.html
		// https://developer.mozilla.org/en-US/docs/Web/API/event.button
		if(e.type === 'mousedown' && e.button > 0  ) {
			return;
		}

		if(_initialZoomRunning) {
			e.preventDefault();
			return;
		}

		if(_oldAndroidTouchEndTimeout && e.type === 'mousedown') {
			return;
		}

		if(_preventDefaultEventBehaviour(e, true)) {
			e.preventDefault();
		}



		_shout('pointerDown');

		if(_pointerEventEnabled) {
			var pointerIndex = framework.arraySearch(_currPointers, e.pointerId, 'id');
			if(pointerIndex < 0) {
				pointerIndex = _currPointers.length;
			}
			_currPointers[pointerIndex] = {x:e.pageX, y:e.pageY, id: e.pointerId};
		}
		


		var startPointsList = _getTouchPoints(e),
			numPoints = startPointsList.length;

		_currentPoints = null;

		_stopAllAnimations();

		// init drag
		if(!_isDragging || numPoints === 1) {

			

			_isDragging = _isFirstMove = true;
			framework.bind(window, _upMoveEvents, self);

			_isZoomingIn = 
				_wasOverInitialZoom = 
				_opacityChanged = 
				_verticalDragInitiated = 
				_mainScrollShifted = 
				_moved = 
				_isMultitouch = 
				_zoomStarted = false;

			_direction = null;

			_shout('firstTouchStart', startPointsList);

			_equalizePoints(_startPanOffset, _panOffset);

			_currPanDist.x = _currPanDist.y = 0;
			_equalizePoints(_currPoint, startPointsList[0]);
			_equalizePoints(_startPoint, _currPoint);

			//_equalizePoints(_startMainScrollPos, _mainScrollPos);
			_startMainScrollPos.x = _slideSize.x * _currPositionIndex;

			_posPoints = [{
				x: _currPoint.x,
				y: _currPoint.y
			}];

			_gestureCheckSpeedTime = _gestureStartTime = _getCurrentTime();

			//_mainScrollAnimationEnd(true);
			_calculatePanBounds( _currZoomLevel, true );
			
			// Start rendering
			_stopDragUpdateLoop();
			_dragUpdateLoop();
			
		}

		// init zoom
		if(!_isZooming && numPoints > 1 && !_mainScrollAnimating && !_mainScrollShifted) {
			_startZoomLevel = _currZoomLevel;
			_zoomStarted = false; // true if zoom changed at least once

			_isZooming = _isMultitouch = true;
			_currPanDist.y = _currPanDist.x = 0;

			_equalizePoints(_startPanOffset, _panOffset);

			_equalizePoints(p, startPointsList[0]);
			_equalizePoints(p2, startPointsList[1]);

			_findCenterOfPoints(p, p2, _currCenterPoint);

			_midZoomPoint.x = Math.abs(_currCenterPoint.x) - _panOffset.x;
			_midZoomPoint.y = Math.abs(_currCenterPoint.y) - _panOffset.y;
			_currPointsDistance = _startPointsDistance = _calculatePointsDistance(p, p2);
		}


	}
function ( e ) { // Allow dragging only via left mouse button. // As this handler is not added in IE8 - we ignore e.which //  // http://www.quirksmode.org/js/events_properties.html // https://developer.mozilla.org/en-US/docs/Web/API/event.button if ( e . type === 'mousedown' && e . button > 0 ) { return ; } if ( _initialZoomRunning ) { e . preventDefault ( ) ; return ; } if ( _oldAndroidTouchEndTimeout && e . type === 'mousedown' ) { return ; } if ( _preventDefaultEventBehaviour ( e , true ) ) { e . preventDefault ( ) ; } _shout ( 'pointerDown' ) ; if ( _pointerEventEnabled ) { var pointerIndex = framework . arraySearch ( _currPointers , e . pointerId , 'id' ) ; if ( pointerIndex < 0 ) { pointerIndex = _currPointers . length ; } _currPointers [ pointerIndex ] = { x : e . pageX , y : e . pageY , id : e . pointerId } ; } var startPointsList = _getTouchPoints ( e ) , numPoints = startPointsList . length ; _currentPoints = null ; _stopAllAnimations ( ) ; // init drag if ( ! _isDragging || numPoints === 1 ) { _isDragging = _isFirstMove = true ; framework . bind ( window , _upMoveEvents , self ) ; _isZoomingIn = _wasOverInitialZoom = _opacityChanged = _verticalDragInitiated = _mainScrollShifted = _moved = _isMultitouch = _zoomStarted = false ; _direction = null ; _shout ( 'firstTouchStart' , startPointsList ) ; _equalizePoints ( _startPanOffset , _panOffset ) ; _currPanDist . x = _currPanDist . y = 0 ; _equalizePoints ( _currPoint , startPointsList [ 0 ] ) ; _equalizePoints ( _startPoint , _currPoint ) ; //_equalizePoints(_startMainScrollPos, _mainScrollPos); _startMainScrollPos . x = _slideSize . x * _currPositionIndex ; _posPoints = [ { x : _currPoint . x , y : _currPoint . y } ] ; _gestureCheckSpeedTime = _gestureStartTime = _getCurrentTime ( ) ; //_mainScrollAnimationEnd(true); _calculatePanBounds ( _currZoomLevel , true ) ; // Start rendering _stopDragUpdateLoop ( ) ; _dragUpdateLoop ( ) ; } // init zoom if ( ! _isZooming && numPoints > 1 && ! _mainScrollAnimating && ! _mainScrollShifted ) { _startZoomLevel = _currZoomLevel ; _zoomStarted = false ; // true if zoom changed at least once _isZooming = _isMultitouch = true ; _currPanDist . y = _currPanDist . x = 0 ; _equalizePoints ( _startPanOffset , _panOffset ) ; _equalizePoints ( p , startPointsList [ 0 ] ) ; _equalizePoints ( p2 , startPointsList [ 1 ] ) ; _findCenterOfPoints ( p , p2 , _currCenterPoint ) ; _midZoomPoint . x = Math . abs ( _currCenterPoint . x ) - _panOffset . x ; _midZoomPoint . y = Math . abs ( _currCenterPoint . y ) - _panOffset . y ; _currPointsDistance = _startPointsDistance = _calculatePointsDistance ( p , p2 ) ; } }
amount of pixels to drag to determine direction of swipe
amount of pixels to drag to determine direction of swipe
The mouse move event handler