/**
* jquery.imgpreload 1.6.2 <https://github.com/farinspace/jquery.imgpreload>
* copyright 2009-2014 dimas begunoff <http://farinspace.com>
* license mit <http://opensource.org/licenses/mit>
*/
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//分享
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/*! iscroll v5.2.0-snapshot ~ (c) 2008-2017 matteo spinelli ~ http://cubiq.org/license */
(function (window, document, math) {
var raf = window.requestanimationframe	||
	window.webkitrequestanimationframe	||
	window.mozrequestanimationframe		||
	window.orequestanimationframe		||
	window.msrequestanimationframe		||
	function (callback) { window.settimeout(callback, 1000 / 60); };

var utils = (function () {
	var me = {};

	var _elementstyle = document.createelement('div').style;
	var _vendor = (function () {
		var vendors = ['t', 'webkitt', 'mozt', 'mst', 'ot'],
			transform,
			i = 0,
			l = vendors.length;

		for ( ; i < l; i++ ) {
			transform = vendors[i] + 'ransform';
			if ( transform in _elementstyle ) return vendors[i].substr(0, vendors[i].length-1);
		}

		return false;
	})();

	function _prefixstyle (style) {
		if ( _vendor === false ) return false;
		if ( _vendor === '' ) return style;
		return _vendor + style.charat(0).touppercase() + style.substr(1);
	}

	me.gettime = date.now || function gettime () { return new date().gettime(); };

	me.extend = function (target, obj) {
		for ( var i in obj ) {
			target[i] = obj[i];
		}
	};

	me.addevent = function (el, type, fn, capture) {
		el.addeventlistener(type, fn, !!capture);
	};

	me.removeevent = function (el, type, fn, capture) {
		el.removeeventlistener(type, fn, !!capture);
	};

	me.prefixpointerevent = function (pointerevent) {
		return window.mspointerevent ?
			'mspointer' + pointerevent.charat(7).touppercase() + pointerevent.substr(8):
			pointerevent;
	};

	me.momentum = function (current, start, time, lowermargin, wrappersize, deceleration) {
		var distance = current - start,
			speed = math.abs(distance) / time,
			destination,
			duration;

		deceleration = deceleration === undefined ? 0.0006 : deceleration;

		destination = current + ( speed * speed ) / ( 2 * deceleration ) * ( distance < 0 ? -1 : 1 );
		duration = speed / deceleration;

		if ( destination < lowermargin ) {
			destination = wrappersize ? lowermargin - ( wrappersize / 2.5 * ( speed / 8 ) ) : lowermargin;
			distance = math.abs(destination - current);
			duration = distance / speed;
		} else if ( destination > 0 ) {
			destination = wrappersize ? wrappersize / 2.5 * ( speed / 8 ) : 0;
			distance = math.abs(current) + destination;
			duration = distance / speed;
		}

		return {
			destination: math.round(destination),
			duration: duration
		};
	};

	var _transform = _prefixstyle('transform');

	me.extend(me, {
		hastransform: _transform !== false,
		hasperspective: _prefixstyle('perspective') in _elementstyle,
		hastouch: 'ontouchstart' in window,
		haspointer: !!(window.pointerevent || window.mspointerevent), // ie10 is prefixed
		hastransition: _prefixstyle('transition') in _elementstyle
	});

	/*
	this should find all android browsers lower than build 535.19 (both stock browser and webview)
	- galaxy s2 is ok
    - 2.3.6 : `applewebkit/533.1 (khtml, like gecko) version/4.0 mobile safari/533.1`
    - 4.0.4 : `applewebkit/534.30 (khtml, like gecko) version/4.0 mobile safari/534.30`
   - galaxy s3 is badandroid (stock brower, webview)
     `applewebkit/534.30 (khtml, like gecko) version/4.0 mobile safari/534.30`
   - galaxy s4 is badandroid (stock brower, webview)
     `applewebkit/534.30 (khtml, like gecko) version/4.0 mobile safari/534.30`
   - galaxy s5 is ok
     `applewebkit/537.36 (khtml, like gecko) version/4.0 mobile safari/537.36 (chrome/)`
   - galaxy s6 is ok
     `applewebkit/537.36 (khtml, like gecko) version/4.0 mobile safari/537.36 (chrome/)`
  */
	me.isbadandroid = (function() {
		var appversion = window.navigator.appversion;
		// android browser is not a chrome browser.
		if (/android/.test(appversion) && !(/chrome\/\d/.test(appversion))) {
			var safariversion = appversion.match(/safari\/(\d+.\d)/);
			if(safariversion && typeof safariversion === "object" && safariversion.length >= 2) {
				return parsefloat(safariversion[1]) < 535.19;
			} else {
				return true;
			}
		} else {
			return false;
		}
	})();

	me.extend(me.style = {}, {
		transform: _transform,
		transitiontimingfunction: _prefixstyle('transitiontimingfunction'),
		transitionduration: _prefixstyle('transitionduration'),
		transitiondelay: _prefixstyle('transitiondelay'),
		transformorigin: _prefixstyle('transformorigin'),
		touchaction: _prefixstyle('touchaction')
	});

	me.hasclass = function (e, c) {
		var re = new regexp("(^|\\s)" + c + "(\\s|$)");
		return re.test(e.classname);
	};

	me.addclass = function (e, c) {
		if ( me.hasclass(e, c) ) {
			return;
		}

		var newclass = e.classname.split(' ');
		newclass.push(c);
		e.classname = newclass.join(' ');
	};

	me.removeclass = function (e, c) {
		if ( !me.hasclass(e, c) ) {
			return;
		}

		var re = new regexp("(^|\\s)" + c + "(\\s|$)", 'g');
		e.classname = e.classname.replace(re, ' ');
	};

	me.offset = function (el) {
		var left = -el.offsetleft,
			top = -el.offsettop;

		// jshint -w084
		while (el = el.offsetparent) {
			left -= el.offsetleft;
			top -= el.offsettop;
		}
		// jshint +w084

		return {
			left: left,
			top: top
		};
	};

	me.preventdefaultexception = function (el, exceptions) {
		for ( var i in exceptions ) {
			if ( exceptions[i].test(el[i]) ) {
				return true;
			}
		}

		return false;
	};

	me.extend(me.eventtype = {}, {
		touchstart: 1,
		touchmove: 1,
		touchend: 1,

		mousedown: 2,
		mousemove: 2,
		mouseup: 2,

		pointerdown: 3,
		pointermove: 3,
		pointerup: 3,

		mspointerdown: 3,
		mspointermove: 3,
		mspointerup: 3
	});

	me.extend(me.ease = {}, {
		quadratic: {
			style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
			fn: function (k) {
				return k * ( 2 - k );
			}
		},
		circular: {
			style: 'cubic-bezier(0.1, 0.57, 0.1, 1)',	// not properly "circular" but this looks better, it should be (0.075, 0.82, 0.165, 1)
			fn: function (k) {
				return math.sqrt( 1 - ( --k * k ) );
			}
		},
		back: {
			style: 'cubic-bezier(0.175, 0.885, 0.32, 1.275)',
			fn: function (k) {
				var b = 4;
				return ( k = k - 1 ) * k * ( ( b + 1 ) * k + b ) + 1;
			}
		},
		bounce: {
			style: '',
			fn: function (k) {
				if ( ( k /= 1 ) < ( 1 / 2.75 ) ) {
					return 7.5625 * k * k;
				} else if ( k < ( 2 / 2.75 ) ) {
					return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
				} else if ( k < ( 2.5 / 2.75 ) ) {
					return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
				} else {
					return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
				}
			}
		},
		elastic: {
			style: '',
			fn: function (k) {
				var f = 0.22,
					e = 0.4;

				if ( k === 0 ) { return 0; }
				if ( k == 1 ) { return 1; }

				return ( e * math.pow( 2, - 10 * k ) * math.sin( ( k - f / 4 ) * ( 2 * math.pi ) / f ) + 1 );
			}
		}
	});

	me.tap = function (e, eventname) {
		var ev = document.createevent('event');
		ev.initevent(eventname, true, true);
		ev.pagex = e.pagex;
		ev.pagey = e.pagey;
		e.target.dispatchevent(ev);
	};

	me.click = function (e) {
		var target = e.target,
			ev;

		if ( !(/(select|input|textarea)/i).test(target.tagname) ) {
			// https://developer.mozilla.org/en-us/docs/web/api/mouseevent/initmouseevent
			// initmouseevent is deprecated.
			ev = document.createevent(window.mouseevent ? 'mouseevents' : 'event');
			ev.initevent('click', true, true);
			ev.view = e.view || window;
			ev.detail = 1;
			ev.screenx = target.screenx || 0;
			ev.screeny = target.screeny || 0;
			ev.clientx = target.clientx || 0;
			ev.clienty = target.clienty || 0;
			ev.ctrlkey = !!e.ctrlkey;
			ev.altkey = !!e.altkey;
			ev.shiftkey = !!e.shiftkey;
			ev.metakey = !!e.metakey;
			ev.button = 0;
			ev.relatedtarget = null;
			ev._constructed = true;
			target.dispatchevent(ev);
		}
	};

	me.gettouchaction = function(eventpassthrough, addpinch) {
		var touchaction = 'none';
		if ( eventpassthrough === 'vertical' ) {
			touchaction = 'pan-y';
		} else if (eventpassthrough === 'horizontal' ) {
			touchaction = 'pan-x';
		}
		if (addpinch && touchaction != 'none') {
			// add pinch-zoom support if the browser supports it, but if not (eg. chrome <55) do nothing
			touchaction += ' pinch-zoom';
		}
		return touchaction;
	};

	me.getrect = function(el) {
		if (el instanceof svgelement) {
			var rect = el.getboundingclientrect();
			return {
				top : rect.top,
				left : rect.left,
				width : rect.width,
				height : rect.height
			};
		} else {
			return {
				top : el.offsettop,
				left : el.offsetleft,
				width : el.offsetwidth,
				height : el.offsetheight
			};
		}
	};

	return me;
})();
function iscroll (el, options) {
	this.wrapper = typeof el == 'string' ? document.queryselector(el) : el;
	this.scroller = this.wrapper.children[0];
	this.scrollerstyle = this.scroller.style;		// cache style for better performance

	this.options = {

		resizescrollbars: true,

		mousewheelspeed: 20,

		snapthreshold: 0.334,

// insert point: options
		disablepointer : !utils.haspointer,
		disabletouch : utils.haspointer || !utils.hastouch,
		disablemouse : utils.haspointer || utils.hastouch,
		startx: 0,
		starty: 0,
		scrolly: true,
		directionlockthreshold: 5,
		momentum: true,

		bounce: true,
		bouncetime: 600,
		bounceeasing: '',

		preventdefault: true,
		preventdefaultexception: { tagname: /^(input|textarea|button|select)$/ },

		hwcompositing: true,
		usetransition: true,
		usetransform: true,
		bindtowrapper: typeof window.onmousedown === "undefined"
	};

	for ( var i in options ) {
		this.options[i] = options[i];
	}

	// normalize options
	this.translatez = this.options.hwcompositing && utils.hasperspective ? ' translatez(0)' : '';

	this.options.usetransition = utils.hastransition && this.options.usetransition;
	this.options.usetransform = utils.hastransform && this.options.usetransform;

	this.options.eventpassthrough = this.options.eventpassthrough === true ? 'vertical' : this.options.eventpassthrough;
	this.options.preventdefault = !this.options.eventpassthrough && this.options.preventdefault;

	// if you want eventpassthrough i have to lock one of the axes
	this.options.scrolly = this.options.eventpassthrough == 'vertical' ? false : this.options.scrolly;
	this.options.scrollx = this.options.eventpassthrough == 'horizontal' ? false : this.options.scrollx;

	// with eventpassthrough we also need lockdirection mechanism
	this.options.freescroll = this.options.freescroll && !this.options.eventpassthrough;
	this.options.directionlockthreshold = this.options.eventpassthrough ? 0 : this.options.directionlockthreshold;

	this.options.bounceeasing = typeof this.options.bounceeasing == 'string' ? utils.ease[this.options.bounceeasing] || utils.ease.circular : this.options.bounceeasing;

	this.options.resizepolling = this.options.resizepolling === undefined ? 60 : this.options.resizepolling;

	if ( this.options.tap === true ) {
		this.options.tap = 'tap';
	}

	// https://github.com/cubiq/iscroll/issues/1029
	if (!this.options.usetransition && !this.options.usetransform) {
		if(!(/relative|absolute/i).test(this.scrollerstyle.position)) {
			this.scrollerstyle.position = "relative";
		}
	}

	if ( this.options.shrinkscrollbars == 'scale' ) {
		this.options.usetransition = false;
	}

	this.options.invertwheeldirection = this.options.invertwheeldirection ? -1 : 1;

	if ( this.options.probetype == 3 ) {
		this.options.usetransition = false;	}

// insert point: normalization

	// some defaults
	this.x = 0;
	this.y = 0;
	this.directionx = 0;
	this.directiony = 0;
	this._events = {};

// insert point: defaults

	this._init();
	this.refresh();

	this.scrollto(this.options.startx, this.options.starty);
	this.enable();
}

iscroll.prototype = {
	version: '5.2.0-snapshot',

	_init: function () {
		this._initevents();

		if ( this.options.scrollbars || this.options.indicators ) {
			this._initindicators();
		}

		if ( this.options.mousewheel ) {
			this._initwheel();
		}

		if ( this.options.snap ) {
			this._initsnap();
		}

		if ( this.options.keybindings ) {
			this._initkeys();
		}

// insert point: _init

	},

	destroy: function () {
		this._initevents(true);
		cleartimeout(this.resizetimeout);
 		this.resizetimeout = null;
		this._execevent('destroy');
	},

	_transitionend: function (e) {
		if ( e.target != this.scroller || !this.isintransition ) {
			return;
		}

		this._transitiontime();
		if ( !this.resetposition(this.options.bouncetime) ) {
			this.isintransition = false;
			this._execevent('scrollend');
		}
	},

	_start: function (e) {
		// react to left mouse button only
		if ( utils.eventtype[e.type] != 1 ) {
		  // for button property
		  // http://unixpapa.com/js/mouse.html
		  var button;
	    if (!e.which) {
	      /* ie case */
	      button = (e.button < 2) ? 0 :
	               ((e.button == 4) ? 1 : 2);
	    } else {
	      /* all others */
	      button = e.button;
	    }
			if ( button !== 0 ) {
				return;
			}
		}

		if ( !this.enabled || (this.initiated && utils.eventtype[e.type] !== this.initiated) ) {
			return;
		}

		if ( this.options.preventdefault && !utils.isbadandroid && !utils.preventdefaultexception(e.target, this.options.preventdefaultexception) ) {
			e.preventdefault();
		}

		var point = e.touches ? e.touches[0] : e,
			pos;

		this.initiated	= utils.eventtype[e.type];
		this.moved		= false;
		this.distx		= 0;
		this.disty		= 0;
		this.directionx = 0;
		this.directiony = 0;
		this.directionlocked = 0;

		this.starttime = utils.gettime();

		if ( this.options.usetransition && this.isintransition ) {
			this._transitiontime();
			this.isintransition = false;
			pos = this.getcomputedposition();
			this._translate(math.round(pos.x), math.round(pos.y));
			this._execevent('scrollend');
		} else if ( !this.options.usetransition && this.isanimating ) {
			this.isanimating = false;
			this._execevent('scrollend');
		}

		this.startx    = this.x;
		this.starty    = this.y;
		this.absstartx = this.x;
		this.absstarty = this.y;
		this.pointx    = point.pagex;
		this.pointy    = point.pagey;

		this._execevent('beforescrollstart');
	},

	_move: function (e) {
		if ( !this.enabled || utils.eventtype[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventdefault ) {	// increases performance on android? todo: check!
			e.preventdefault();
		}

		var point		= e.touches ? e.touches[0] : e,
			deltax		= point.pagex - this.pointx,
			deltay		= point.pagey - this.pointy,
			timestamp	= utils.gettime(),
			newx, newy,
			absdistx, absdisty;

		this.pointx		= point.pagex;
		this.pointy		= point.pagey;

		this.distx		+= deltax;
		this.disty		+= deltay;
		absdistx		= math.abs(this.distx);
		absdisty		= math.abs(this.disty);

		// we need to move at least 10 pixels for the scrolling to initiate
		if ( timestamp - this.endtime > 300 && (absdistx < 10 && absdisty < 10) ) {
			return;
		}

		// if you are scrolling in one direction lock the other
		if ( !this.directionlocked && !this.options.freescroll ) {
			if ( absdistx > absdisty + this.options.directionlockthreshold ) {
				this.directionlocked = 'h';		// lock horizontally
			} else if ( absdisty >= absdistx + this.options.directionlockthreshold ) {
				this.directionlocked = 'v';		// lock vertically
			} else {
				this.directionlocked = 'n';		// no lock
			}
		}

		if ( this.directionlocked == 'h' ) {
			if ( this.options.eventpassthrough == 'vertical' ) {
				e.preventdefault();
			} else if ( this.options.eventpassthrough == 'horizontal' ) {
				this.initiated = false;
				return;
			}

			deltay = 0;
		} else if ( this.directionlocked == 'v' ) {
			if ( this.options.eventpassthrough == 'horizontal' ) {
				e.preventdefault();
			} else if ( this.options.eventpassthrough == 'vertical' ) {
				this.initiated = false;
				return;
			}

			deltax = 0;
		}

		deltax = this.hashorizontalscroll ? deltax : 0;
		deltay = this.hasverticalscroll ? deltay : 0;

		newx = this.x + deltax;
		newy = this.y + deltay;

		// slow down if outside of the boundaries
		if ( newx > 0 || newx < this.maxscrollx ) {
			newx = this.options.bounce ? this.x + deltax / 3 : newx > 0 ? 0 : this.maxscrollx;
		}
		if ( newy > 0 || newy < this.maxscrolly ) {
			newy = this.options.bounce ? this.y + deltay / 3 : newy > 0 ? 0 : this.maxscrolly;
		}

		this.directionx = deltax > 0 ? -1 : deltax < 0 ? 1 : 0;
		this.directiony = deltay > 0 ? -1 : deltay < 0 ? 1 : 0;

		if ( !this.moved ) {
			this._execevent('scrollstart');
		}

		this.moved = true;

		this._translate(newx, newy);

/* replace start: _move */
		if ( timestamp - this.starttime > 300 ) {
			this.starttime = timestamp;
			this.startx = this.x;
			this.starty = this.y;

			if ( this.options.probetype == 1 ) {
				this._execevent('scroll');
			}
		}

		if ( this.options.probetype > 1 ) {
			this._execevent('scroll');
		}
/* replace end: _move */

	},

	_end: function (e) {
		if ( !this.enabled || utils.eventtype[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventdefault && !utils.preventdefaultexception(e.target, this.options.preventdefaultexception) ) {
			e.preventdefault();
		}

		var point = e.changedtouches ? e.changedtouches[0] : e,
			momentumx,
			momentumy,
			duration = utils.gettime() - this.starttime,
			newx = math.round(this.x),
			newy = math.round(this.y),
			distancex = math.abs(newx - this.startx),
			distancey = math.abs(newy - this.starty),
			time = 0,
			easing = '';

		this.isintransition = 0;
		this.initiated = 0;
		this.endtime = utils.gettime();

		// reset if we are outside of the boundaries
		if ( this.resetposition(this.options.bouncetime) ) {
			return;
		}

		this.scrollto(newx, newy);	// ensures that the last position is rounded

		// we scrolled less than 10 pixels
		if ( !this.moved ) {
			if ( this.options.tap ) {
				utils.tap(e, this.options.tap);
			}

			if ( this.options.click ) {
				utils.click(e);
			}

			this._execevent('scrollcancel');
			return;
		}

		if ( this._events.flick && duration < 200 && distancex < 100 && distancey < 100 ) {
			this._execevent('flick');
			return;
		}

		// start momentum animation if needed
		if ( this.options.momentum && duration < 300 ) {
			momentumx = this.hashorizontalscroll ? utils.momentum(this.x, this.startx, duration, this.maxscrollx, this.options.bounce ? this.wrapperwidth : 0, this.options.deceleration) : { destination: newx, duration: 0 };
			momentumy = this.hasverticalscroll ? utils.momentum(this.y, this.starty, duration, this.maxscrolly, this.options.bounce ? this.wrapperheight : 0, this.options.deceleration) : { destination: newy, duration: 0 };
			newx = momentumx.destination;
			newy = momentumy.destination;
			time = math.max(momentumx.duration, momentumy.duration);
			this.isintransition = 1;
		}


		if ( this.options.snap ) {
			var snap = this._nearestsnap(newx, newy);
			this.currentpage = snap;
			time = this.options.snapspeed || math.max(
					math.max(
						math.min(math.abs(newx - snap.x), 1000),
						math.min(math.abs(newy - snap.y), 1000)
					), 300);
			newx = snap.x;
			newy = snap.y;

			this.directionx = 0;
			this.directiony = 0;
			easing = this.options.bounceeasing;
		}

// insert point: _end

		if ( newx != this.x || newy != this.y ) {
			// change easing function when scroller goes out of the boundaries
			if ( newx > 0 || newx < this.maxscrollx || newy > 0 || newy < this.maxscrolly ) {
				easing = utils.ease.quadratic;
			}

			this.scrollto(newx, newy, time, easing);
			return;
		}

		this._execevent('scrollend');
	},

	_resize: function () {
		var that = this;

		cleartimeout(this.resizetimeout);

		this.resizetimeout = settimeout(function () {
			that.refresh();
		}, this.options.resizepolling);
	},

	resetposition: function (time) {
		var x = this.x,
			y = this.y;

		time = time || 0;

		if ( !this.hashorizontalscroll || this.x > 0 ) {
			x = 0;
		} else if ( this.x < this.maxscrollx ) {
			x = this.maxscrollx;
		}

		if ( !this.hasverticalscroll || this.y > 0 ) {
			y = 0;
		} else if ( this.y < this.maxscrolly ) {
			y = this.maxscrolly;
		}

		if ( x == this.x && y == this.y ) {
			return false;
		}

		this.scrollto(x, y, time, this.options.bounceeasing);

		return true;
	},

	disable: function () {
		this.enabled = false;
	},

	enable: function () {
		this.enabled = true;
	},

	refresh: function () {
		utils.getrect(this.wrapper);		// force reflow

		this.wrapperwidth	= this.wrapper.clientwidth;
		this.wrapperheight	= this.wrapper.clientheight;

		var rect = utils.getrect(this.scroller);
/* replace start: refresh */

		this.scrollerwidth	= rect.width;
		this.scrollerheight	= rect.height;

		this.maxscrollx		= this.wrapperwidth - this.scrollerwidth;
		this.maxscrolly		= this.wrapperheight - this.scrollerheight;

/* replace end: refresh */

		this.hashorizontalscroll	= this.options.scrollx && this.maxscrollx < 0;
		this.hasverticalscroll		= this.options.scrolly && this.maxscrolly < 0;
		
		if ( !this.hashorizontalscroll ) {
			this.maxscrollx = 0;
			this.scrollerwidth = this.wrapperwidth;
		}

		if ( !this.hasverticalscroll ) {
			this.maxscrolly = 0;
			this.scrollerheight = this.wrapperheight;
		}

		this.endtime = 0;
		this.directionx = 0;
		this.directiony = 0;
		
		if(utils.haspointer && !this.options.disablepointer) {
			// the wrapper should have `touchaction` property for using pointerevent.
			this.wrapper.style[utils.style.touchaction] = utils.gettouchaction(this.options.eventpassthrough, true);

			// case. not support 'pinch-zoom'
			// https://github.com/cubiq/iscroll/issues/1118#issuecomment-270057583
			if (!this.wrapper.style[utils.style.touchaction]) {
				this.wrapper.style[utils.style.touchaction] = utils.gettouchaction(this.options.eventpassthrough, false);
			}
		}
		this.wrapperoffset = utils.offset(this.wrapper);

		this._execevent('refresh');

		this.resetposition();

// insert point: _refresh

	},	

	on: function (type, fn) {
		if ( !this._events[type] ) {
			this._events[type] = [];
		}

		this._events[type].push(fn);
	},

	off: function (type, fn) {
		if ( !this._events[type] ) {
			return;
		}

		var index = this._events[type].indexof(fn);

		if ( index > -1 ) {
			this._events[type].splice(index, 1);
		}
	},

	_execevent: function (type) {
		if ( !this._events[type] ) {
			return;
		}

		var i = 0,
			l = this._events[type].length;

		if ( !l ) {
			return;
		}

		for ( ; i < l; i++ ) {
			this._events[type][i].apply(this, [].slice.call(arguments, 1));
		}
	},

	scrollby: function (x, y, time, easing) {
		x = this.x + x;
		y = this.y + y;
		time = time || 0;

		this.scrollto(x, y, time, easing);
	},

	scrollto: function (x, y, time, easing) {
		easing = easing || utils.ease.circular;

		this.isintransition = this.options.usetransition && time > 0;
		var transitiontype = this.options.usetransition && easing.style;
		if ( !time || transitiontype ) {
				if(transitiontype) {
					this._transitiontimingfunction(easing.style);
					this._transitiontime(time);
				}
			this._translate(x, y);
		} else {
			this._animate(x, y, time, easing.fn);
		}
	},

	scrolltoelement: function (el, time, offsetx, offsety, easing) {
		el = el.nodetype ? el : this.scroller.queryselector(el);

		if ( !el ) {
			return;
		}

		var pos = utils.offset(el);

		pos.left -= this.wrapperoffset.left;
		pos.top  -= this.wrapperoffset.top;

		// if offsetx/y are true we center the element to the screen
		var elrect = utils.getrect(el);
		var wrapperrect = utils.getrect(this.wrapper);
		if ( offsetx === true ) {
			offsetx = math.round(elrect.width / 2 - wrapperrect.width / 2);
		}
		if ( offsety === true ) {
			offsety = math.round(elrect.height / 2 - wrapperrect.height / 2);
		}

		pos.left -= offsetx || 0;
		pos.top  -= offsety || 0;

		pos.left = pos.left > 0 ? 0 : pos.left < this.maxscrollx ? this.maxscrollx : pos.left;
		pos.top  = pos.top  > 0 ? 0 : pos.top  < this.maxscrolly ? this.maxscrolly : pos.top;

		time = time === undefined || time === null || time === 'auto' ? math.max(math.abs(this.x-pos.left), math.abs(this.y-pos.top)) : time;

		this.scrollto(pos.left, pos.top, time, easing);
	},

	_transitiontime: function (time) {
		if (!this.options.usetransition) {
			return;
		}
		time = time || 0;
		var durationprop = utils.style.transitionduration;
		if(!durationprop) {
			return;
		}

		this.scrollerstyle[durationprop] = time + 'ms';

		if ( !time && utils.isbadandroid ) {
			this.scrollerstyle[durationprop] = '0.0001ms';
			// remove 0.0001ms
			var self = this;
			raf(function() {
				if(self.scrollerstyle[durationprop] === '0.0001ms') {
					self.scrollerstyle[durationprop] = '0s';
				}
			});
		}


		if ( this.indicators ) {
			for ( var i = this.indicators.length; i--; ) {
				this.indicators[i].transitiontime(time);
			}
		}


// insert point: _transitiontime

	},

	_transitiontimingfunction: function (easing) {
		this.scrollerstyle[utils.style.transitiontimingfunction] = easing;


		if ( this.indicators ) {
			for ( var i = this.indicators.length; i--; ) {
				this.indicators[i].transitiontimingfunction(easing);
			}
		}


// insert point: _transitiontimingfunction

	},

	_translate: function (x, y) {
		if ( this.options.usetransform ) {

/* replace start: _translate */

			this.scrollerstyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.translatez;

/* replace end: _translate */

		} else {
			x = math.round(x);
			y = math.round(y);
			this.scrollerstyle.left = x + 'px';
			this.scrollerstyle.top = y + 'px';
		}

		this.x = x;
		this.y = y;


	if ( this.indicators ) {
		for ( var i = this.indicators.length; i--; ) {
			this.indicators[i].updateposition();
		}
	}


// insert point: _translate

	},

	_initevents: function (remove) {
		var eventtype = remove ? utils.removeevent : utils.addevent,
			target = this.options.bindtowrapper ? this.wrapper : window;

		eventtype(window, 'orientationchange', this);
		eventtype(window, 'resize', this);

		if ( this.options.click ) {
			eventtype(this.wrapper, 'click', this, true);
		}

		if ( !this.options.disablemouse ) {
			eventtype(this.wrapper, 'mousedown', this);
			eventtype(target, 'mousemove', this);
			eventtype(target, 'mousecancel', this);
			eventtype(target, 'mouseup', this);
		}

		if ( utils.haspointer && !this.options.disablepointer ) {
			eventtype(this.wrapper, utils.prefixpointerevent('pointerdown'), this);
			eventtype(target, utils.prefixpointerevent('pointermove'), this);
			eventtype(target, utils.prefixpointerevent('pointercancel'), this);
			eventtype(target, utils.prefixpointerevent('pointerup'), this);
		}

		if ( utils.hastouch && !this.options.disabletouch ) {
			eventtype(this.wrapper, 'touchstart', this);
			eventtype(target, 'touchmove', this);
			eventtype(target, 'touchcancel', this);
			eventtype(target, 'touchend', this);
		}

		eventtype(this.scroller, 'transitionend', this);
		eventtype(this.scroller, 'webkittransitionend', this);
		eventtype(this.scroller, 'otransitionend', this);
		eventtype(this.scroller, 'mstransitionend', this);
	},

	getcomputedposition: function () {
		var matrix = window.getcomputedstyle(this.scroller, null),
			x, y;

		if ( this.options.usetransform ) {
			matrix = matrix[utils.style.transform].split(')')[0].split(', ');
			x = +(matrix[12] || matrix[4]);
			y = +(matrix[13] || matrix[5]);
		} else {
			x = +matrix.left.replace(/[^-\d.]/g, '');
			y = +matrix.top.replace(/[^-\d.]/g, '');
		}

		return { x: x, y: y };
	},
	_initindicators: function () {
		var interactive = this.options.interactivescrollbars,
			customstyle = typeof this.options.scrollbars != 'string',
			indicators = [],
			indicator;

		var that = this;

		this.indicators = [];

		if ( this.options.scrollbars ) {
			// vertical scrollbar
			if ( this.options.scrolly ) {
				indicator = {
					el: createdefaultscrollbar('v', interactive, this.options.scrollbars),
					interactive: interactive,
					defaultscrollbars: true,
					customstyle: customstyle,
					resize: this.options.resizescrollbars,
					shrink: this.options.shrinkscrollbars,
					fade: this.options.fadescrollbars,
					listenx: false
				};

				this.wrapper.appendchild(indicator.el);
				indicators.push(indicator);
			}

			// horizontal scrollbar
			if ( this.options.scrollx ) {
				indicator = {
					el: createdefaultscrollbar('h', interactive, this.options.scrollbars),
					interactive: interactive,
					defaultscrollbars: true,
					customstyle: customstyle,
					resize: this.options.resizescrollbars,
					shrink: this.options.shrinkscrollbars,
					fade: this.options.fadescrollbars,
					listeny: false
				};

				this.wrapper.appendchild(indicator.el);
				indicators.push(indicator);
			}
		}

		if ( this.options.indicators ) {
			// todo: check concat compatibility
			indicators = indicators.concat(this.options.indicators);
		}

		for ( var i = indicators.length; i--; ) {
			this.indicators.push( new indicator(this, indicators[i]) );
		}

		// todo: check if we can use array.map (wide compatibility and performance issues)
		function _indicatorsmap (fn) {
			if (that.indicators) {
				for ( var i = that.indicators.length; i--; ) {
					fn.call(that.indicators[i]);
				}
			}
		}

		if ( this.options.fadescrollbars ) {
			this.on('scrollend', function () {
				_indicatorsmap(function () {
					this.fade();
				});
			});

			this.on('scrollcancel', function () {
				_indicatorsmap(function () {
					this.fade();
				});
			});

			this.on('scrollstart', function () {
				_indicatorsmap(function () {
					this.fade(1);
				});
			});

			this.on('beforescrollstart', function () {
				_indicatorsmap(function () {
					this.fade(1, true);
				});
			});
		}


		this.on('refresh', function () {
			_indicatorsmap(function () {
				this.refresh();
			});
		});

		this.on('destroy', function () {
			_indicatorsmap(function () {
				this.destroy();
			});

			delete this.indicators;
		});
	},

	_initwheel: function () {
		utils.addevent(this.wrapper, 'wheel', this);
		utils.addevent(this.wrapper, 'mousewheel', this);
		utils.addevent(this.wrapper, 'dommousescroll', this);

		this.on('destroy', function () {
			cleartimeout(this.wheeltimeout);
			this.wheeltimeout = null;
			utils.removeevent(this.wrapper, 'wheel', this);
			utils.removeevent(this.wrapper, 'mousewheel', this);
			utils.removeevent(this.wrapper, 'dommousescroll', this);
		});
	},

	_wheel: function (e) {
		if ( !this.enabled ) {
			return;
		}

		e.preventdefault();

		var wheeldeltax, wheeldeltay,
			newx, newy,
			that = this;

		if ( this.wheeltimeout === undefined ) {
			that._execevent('scrollstart');
		}

		// execute the scrollend event after 400ms the wheel stopped scrolling
		cleartimeout(this.wheeltimeout);
		this.wheeltimeout = settimeout(function () {
			if(!that.options.snap) {
				that._execevent('scrollend');
			}
			that.wheeltimeout = undefined;
		}, 400);

		if ( 'deltax' in e ) {
			if (e.deltamode === 1) {
				wheeldeltax = -e.deltax * this.options.mousewheelspeed;
				wheeldeltay = -e.deltay * this.options.mousewheelspeed;
			} else {
				wheeldeltax = -e.deltax;
				wheeldeltay = -e.deltay;
			}
		} else if ( 'wheeldeltax' in e ) {
			wheeldeltax = e.wheeldeltax / 120 * this.options.mousewheelspeed;
			wheeldeltay = e.wheeldeltay / 120 * this.options.mousewheelspeed;
		} else if ( 'wheeldelta' in e ) {
			wheeldeltax = wheeldeltay = e.wheeldelta / 120 * this.options.mousewheelspeed;
		} else if ( 'detail' in e ) {
			wheeldeltax = wheeldeltay = -e.detail / 3 * this.options.mousewheelspeed;
		} else {
			return;
		}

		wheeldeltax *= this.options.invertwheeldirection;
		wheeldeltay *= this.options.invertwheeldirection;

		if ( !this.hasverticalscroll ) {
			wheeldeltax = wheeldeltay;
			wheeldeltay = 0;
		}

		if ( this.options.snap ) {
			newx = this.currentpage.pagex;
			newy = this.currentpage.pagey;

			if ( wheeldeltax > 0 ) {
				newx--;
			} else if ( wheeldeltax < 0 ) {
				newx++;
			}

			if ( wheeldeltay > 0 ) {
				newy--;
			} else if ( wheeldeltay < 0 ) {
				newy++;
			}

			this.gotopage(newx, newy);

			return;
		}

		newx = this.x + math.round(this.hashorizontalscroll ? wheeldeltax : 0);
		newy = this.y + math.round(this.hasverticalscroll ? wheeldeltay : 0);

		this.directionx = wheeldeltax > 0 ? -1 : wheeldeltax < 0 ? 1 : 0;
		this.directiony = wheeldeltay > 0 ? -1 : wheeldeltay < 0 ? 1 : 0;

		if ( newx > 0 ) {
			newx = 0;
		} else if ( newx < this.maxscrollx ) {
			newx = this.maxscrollx;
		}

		if ( newy > 0 ) {
			newy = 0;
		} else if ( newy < this.maxscrolly ) {
			newy = this.maxscrolly;
		}

		this.scrollto(newx, newy, 0);

		if ( this.options.probetype > 1 ) {
			this._execevent('scroll');
		}

// insert point: _wheel
	},

	_initsnap: function () {
		this.currentpage = {};

		if ( typeof this.options.snap == 'string' ) {
			this.options.snap = this.scroller.queryselectorall(this.options.snap);
		}

		this.on('refresh', function () {
			var i = 0, l,
				m = 0, n,
				cx, cy,
				x = 0, y,
				stepx = this.options.snapstepx || this.wrapperwidth,
				stepy = this.options.snapstepy || this.wrapperheight,
				el,
				rect;

			this.pages = [];

			if ( !this.wrapperwidth || !this.wrapperheight || !this.scrollerwidth || !this.scrollerheight ) {
				return;
			}

			if ( this.options.snap === true ) {
				cx = math.round( stepx / 2 );
				cy = math.round( stepy / 2 );

				while ( x > -this.scrollerwidth ) {
					this.pages[i] = [];
					l = 0;
					y = 0;

					while ( y > -this.scrollerheight ) {
						this.pages[i][l] = {
							x: math.max(x, this.maxscrollx),
							y: math.max(y, this.maxscrolly),
							width: stepx,
							height: stepy,
							cx: x - cx,
							cy: y - cy
						};

						y -= stepy;
						l++;
					}

					x -= stepx;
					i++;
				}
			} else {
				el = this.options.snap;
				l = el.length;
				n = -1;

				for ( ; i < l; i++ ) {
					rect = utils.getrect(el[i]);
					if ( i === 0 || rect.left <= utils.getrect(el[i-1]).left ) {
						m = 0;
						n++;
					}

					if ( !this.pages[m] ) {
						this.pages[m] = [];
					}

					x = math.max(-rect.left, this.maxscrollx);
					y = math.max(-rect.top, this.maxscrolly);
					cx = x - math.round(rect.width / 2);
					cy = y - math.round(rect.height / 2);

					this.pages[m][n] = {
						x: x,
						y: y,
						width: rect.width,
						height: rect.height,
						cx: cx,
						cy: cy
					};

					if ( x > this.maxscrollx ) {
						m++;
					}
				}
			}

			this.gotopage(this.currentpage.pagex || 0, this.currentpage.pagey || 0, 0);

			// update snap threshold if needed
			if ( this.options.snapthreshold % 1 === 0 ) {
				this.snapthresholdx = this.options.snapthreshold;
				this.snapthresholdy = this.options.snapthreshold;
			} else {
				this.snapthresholdx = math.round(this.pages[this.currentpage.pagex][this.currentpage.pagey].width * this.options.snapthreshold);
				this.snapthresholdy = math.round(this.pages[this.currentpage.pagex][this.currentpage.pagey].height * this.options.snapthreshold);
			}
		});

		this.on('flick', function () {
			var time = this.options.snapspeed || math.max(
					math.max(
						math.min(math.abs(this.x - this.startx), 1000),
						math.min(math.abs(this.y - this.starty), 1000)
					), 300);

			this.gotopage(
				this.currentpage.pagex + this.directionx,
				this.currentpage.pagey + this.directiony,
				time
			);
		});
	},

	_nearestsnap: function (x, y) {
		if ( !this.pages.length ) {
			return { x: 0, y: 0, pagex: 0, pagey: 0 };
		}

		var i = 0,
			l = this.pages.length,
			m = 0;

		// check if we exceeded the snap threshold
		if ( math.abs(x - this.absstartx) < this.snapthresholdx &&
			math.abs(y - this.absstarty) < this.snapthresholdy ) {
			return this.currentpage;
		}

		if ( x > 0 ) {
			x = 0;
		} else if ( x < this.maxscrollx ) {
			x = this.maxscrollx;
		}

		if ( y > 0 ) {
			y = 0;
		} else if ( y < this.maxscrolly ) {
			y = this.maxscrolly;
		}

		for ( ; i < l; i++ ) {
			if ( x >= this.pages[i][0].cx ) {
				x = this.pages[i][0].x;
				break;
			}
		}

		l = this.pages[i].length;

		for ( ; m < l; m++ ) {
			if ( y >= this.pages[0][m].cy ) {
				y = this.pages[0][m].y;
				break;
			}
		}

		if ( i == this.currentpage.pagex ) {
			i += this.directionx;

			if ( i < 0 ) {
				i = 0;
			} else if ( i >= this.pages.length ) {
				i = this.pages.length - 1;
			}

			x = this.pages[i][0].x;
		}

		if ( m == this.currentpage.pagey ) {
			m += this.directiony;

			if ( m < 0 ) {
				m = 0;
			} else if ( m >= this.pages[0].length ) {
				m = this.pages[0].length - 1;
			}

			y = this.pages[0][m].y;
		}

		return {
			x: x,
			y: y,
			pagex: i,
			pagey: m
		};
	},

	gotopage: function (x, y, time, easing) {
		easing = easing || this.options.bounceeasing;

		if ( x >= this.pages.length ) {
			x = this.pages.length - 1;
		} else if ( x < 0 ) {
			x = 0;
		}

		if ( y >= this.pages[x].length ) {
			y = this.pages[x].length - 1;
		} else if ( y < 0 ) {
			y = 0;
		}

		var posx = this.pages[x][y].x,
			posy = this.pages[x][y].y;

		time = time === undefined ? this.options.snapspeed || math.max(
			math.max(
				math.min(math.abs(posx - this.x), 1000),
				math.min(math.abs(posy - this.y), 1000)
			), 300) : time;

		this.currentpage = {
			x: posx,
			y: posy,
			pagex: x,
			pagey: y
		};

		this.scrollto(posx, posy, time, easing);
	},

	next: function (time, easing) {
		var x = this.currentpage.pagex,
			y = this.currentpage.pagey;

		x++;

		if ( x >= this.pages.length && this.hasverticalscroll ) {
			x = 0;
			y++;
		}

		this.gotopage(x, y, time, easing);
	},

	prev: function (time, easing) {
		var x = this.currentpage.pagex,
			y = this.currentpage.pagey;

		x--;

		if ( x < 0 && this.hasverticalscroll ) {
			x = 0;
			y--;
		}

		this.gotopage(x, y, time, easing);
	},

	_initkeys: function (e) {
		// default key bindings
		var keys = {
			pageup: 33,
			pagedown: 34,
			end: 35,
			home: 36,
			left: 37,
			up: 38,
			right: 39,
			down: 40
		};
		var i;

		// if you give me characters i give you keycode
		if ( typeof this.options.keybindings == 'object' ) {
			for ( i in this.options.keybindings ) {
				if ( typeof this.options.keybindings[i] == 'string' ) {
					this.options.keybindings[i] = this.options.keybindings[i].touppercase().charcodeat(0);
				}
			}
		} else {
			this.options.keybindings = {};
		}

		for ( i in keys ) {
			this.options.keybindings[i] = this.options.keybindings[i] || keys[i];
		}

		utils.addevent(window, 'keydown', this);

		this.on('destroy', function () {
			utils.removeevent(window, 'keydown', this);
		});
	},

	_key: function (e) {
		if ( !this.enabled ) {
			return;
		}

		var snap = this.options.snap,	// we are using this alot, better to cache it
			newx = snap ? this.currentpage.pagex : this.x,
			newy = snap ? this.currentpage.pagey : this.y,
			now = utils.gettime(),
			prevtime = this.keytime || 0,
			acceleration = 0.250,
			pos;

		if ( this.options.usetransition && this.isintransition ) {
			pos = this.getcomputedposition();

			this._translate(math.round(pos.x), math.round(pos.y));
			this.isintransition = false;
		}

		this.keyacceleration = now - prevtime < 200 ? math.min(this.keyacceleration + acceleration, 50) : 0;

		switch ( e.keycode ) {
			case this.options.keybindings.pageup:
				if ( this.hashorizontalscroll && !this.hasverticalscroll ) {
					newx += snap ? 1 : this.wrapperwidth;
				} else {
					newy += snap ? 1 : this.wrapperheight;
				}
				break;
			case this.options.keybindings.pagedown:
				if ( this.hashorizontalscroll && !this.hasverticalscroll ) {
					newx -= snap ? 1 : this.wrapperwidth;
				} else {
					newy -= snap ? 1 : this.wrapperheight;
				}
				break;
			case this.options.keybindings.end:
				newx = snap ? this.pages.length-1 : this.maxscrollx;
				newy = snap ? this.pages[0].length-1 : this.maxscrolly;
				break;
			case this.options.keybindings.home:
				newx = 0;
				newy = 0;
				break;
			case this.options.keybindings.left:
				newx += snap ? -1 : 5 + this.keyacceleration>>0;
				break;
			case this.options.keybindings.up:
				newy += snap ? 1 : 5 + this.keyacceleration>>0;
				break;
			case this.options.keybindings.right:
				newx -= snap ? -1 : 5 + this.keyacceleration>>0;
				break;
			case this.options.keybindings.down:
				newy -= snap ? 1 : 5 + this.keyacceleration>>0;
				break;
			default:
				return;
		}

		if ( snap ) {
			this.gotopage(newx, newy);
			return;
		}

		if ( newx > 0 ) {
			newx = 0;
			this.keyacceleration = 0;
		} else if ( newx < this.maxscrollx ) {
			newx = this.maxscrollx;
			this.keyacceleration = 0;
		}

		if ( newy > 0 ) {
			newy = 0;
			this.keyacceleration = 0;
		} else if ( newy < this.maxscrolly ) {
			newy = this.maxscrolly;
			this.keyacceleration = 0;
		}

		this.scrollto(newx, newy, 0);

		this.keytime = now;
	},

	_animate: function (destx, desty, duration, easingfn) {
		var that = this,
			startx = this.x,
			starty = this.y,
			starttime = utils.gettime(),
			desttime = starttime + duration;

		function step () {
			var now = utils.gettime(),
				newx, newy,
				easing;

			if ( now >= desttime ) {
				that.isanimating = false;
				that._translate(destx, desty);
				
				if ( !that.resetposition(that.options.bouncetime) ) {
					that._execevent('scrollend');
				}

				return;
			}

			now = ( now - starttime ) / duration;
			easing = easingfn(now);
			newx = ( destx - startx ) * easing + startx;
			newy = ( desty - starty ) * easing + starty;
			that._translate(newx, newy);

			if ( that.isanimating ) {
				raf(step);
			}

			if ( that.options.probetype == 3 ) {
				that._execevent('scroll');
			}
		}

		this.isanimating = true;
		step();
	},

	handleevent: function (e) {
		switch ( e.type ) {
			case 'touchstart':
			case 'pointerdown':
			case 'mspointerdown':
			case 'mousedown':
				this._start(e);
				break;
			case 'touchmove':
			case 'pointermove':
			case 'mspointermove':
			case 'mousemove':
				this._move(e);
				break;
			case 'touchend':
			case 'pointerup':
			case 'mspointerup':
			case 'mouseup':
			case 'touchcancel':
			case 'pointercancel':
			case 'mspointercancel':
			case 'mousecancel':
				this._end(e);
				break;
			case 'orientationchange':
			case 'resize':
				this._resize();
				break;
			case 'transitionend':
			case 'webkittransitionend':
			case 'otransitionend':
			case 'mstransitionend':
				this._transitionend(e);
				break;
			case 'wheel':
			case 'dommousescroll':
			case 'mousewheel':
				this._wheel(e);
				break;
			case 'keydown':
				this._key(e);
				break;
			case 'click':
				if ( this.enabled && !e._constructed ) {
					e.preventdefault();
					e.stoppropagation();
				}
				break;
		}
	}
};
function createdefaultscrollbar (direction, interactive, type) {
	var scrollbar = document.createelement('div'),
		indicator = document.createelement('div');

	if ( type === true ) {
		scrollbar.style.csstext = 'position:absolute;z-index:9999';
		indicator.style.csstext = '-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;position:absolute;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);border-radius:3px';
	}

	indicator.classname = 'iscrollindicator';

	if ( direction == 'h' ) {
		if ( type === true ) {
			scrollbar.style.csstext += ';height:7px;left:2px;right:2px;bottom:0';
			indicator.style.height = '100%';
		}
		scrollbar.classname = 'iscrollhorizontalscrollbar';
	} else {
		if ( type === true ) {
			scrollbar.style.csstext += ';width:7px;bottom:2px;top:2px;right:1px';
			indicator.style.width = '100%';
		}
		scrollbar.classname = 'iscrollverticalscrollbar';
	}

	scrollbar.style.csstext += ';overflow:hidden';

	if ( !interactive ) {
		scrollbar.style.pointerevents = 'none';
	}

	scrollbar.appendchild(indicator);

	return scrollbar;
}

function indicator (scroller, options) {
	this.wrapper = typeof options.el == 'string' ? document.queryselector(options.el) : options.el;
	this.wrapperstyle = this.wrapper.style;
	this.indicator = this.wrapper.children[0];
	this.indicatorstyle = this.indicator.style;
	this.scroller = scroller;

	this.options = {
		listenx: true,
		listeny: true,
		interactive: false,
		resize: true,
		defaultscrollbars: false,
		shrink: false,
		fade: false,
		speedratiox: 0,
		speedratioy: 0
	};

	for ( var i in options ) {
		this.options[i] = options[i];
	}

	this.sizeratiox = 1;
	this.sizeratioy = 1;
	this.maxposx = 0;
	this.maxposy = 0;

	if ( this.options.interactive ) {
		if ( !this.options.disabletouch ) {
			utils.addevent(this.indicator, 'touchstart', this);
			utils.addevent(window, 'touchend', this);
		}
		if ( !this.options.disablepointer ) {
			utils.addevent(this.indicator, utils.prefixpointerevent('pointerdown'), this);
			utils.addevent(window, utils.prefixpointerevent('pointerup'), this);
		}
		if ( !this.options.disablemouse ) {
			utils.addevent(this.indicator, 'mousedown', this);
			utils.addevent(window, 'mouseup', this);
		}
	}

	if ( this.options.fade ) {
		this.wrapperstyle[utils.style.transform] = this.scroller.translatez;
		var durationprop = utils.style.transitionduration;
		if(!durationprop) {
			return;
		}
		this.wrapperstyle[durationprop] = utils.isbadandroid ? '0.0001ms' : '0ms';
		// remove 0.0001ms
		var self = this;
		if(utils.isbadandroid) {
			raf(function() {
				if(self.wrapperstyle[durationprop] === '0.0001ms') {
					self.wrapperstyle[durationprop] = '0s';
				}
			});
		}
		this.wrapperstyle.opacity = '0';
	}
}

indicator.prototype = {
	handleevent: function (e) {
		switch ( e.type ) {
			case 'touchstart':
			case 'pointerdown':
			case 'mspointerdown':
			case 'mousedown':
				this._start(e);
				break;
			case 'touchmove':
			case 'pointermove':
			case 'mspointermove':
			case 'mousemove':
				this._move(e);
				break;
			case 'touchend':
			case 'pointerup':
			case 'mspointerup':
			case 'mouseup':
			case 'touchcancel':
			case 'pointercancel':
			case 'mspointercancel':
			case 'mousecancel':
				this._end(e);
				break;
		}
	},

	destroy: function () {
		if ( this.options.fadescrollbars ) {
			cleartimeout(this.fadetimeout);
			this.fadetimeout = null;
		}
		if ( this.options.interactive ) {
			utils.removeevent(this.indicator, 'touchstart', this);
			utils.removeevent(this.indicator, utils.prefixpointerevent('pointerdown'), this);
			utils.removeevent(this.indicator, 'mousedown', this);

			utils.removeevent(window, 'touchmove', this);
			utils.removeevent(window, utils.prefixpointerevent('pointermove'), this);
			utils.removeevent(window, 'mousemove', this);

			utils.removeevent(window, 'touchend', this);
			utils.removeevent(window, utils.prefixpointerevent('pointerup'), this);
			utils.removeevent(window, 'mouseup', this);
		}

		if ( this.options.defaultscrollbars && this.wrapper.parentnode ) {
			this.wrapper.parentnode.removechild(this.wrapper);
		}
	},

	_start: function (e) {
		var point = e.touches ? e.touches[0] : e;

		e.preventdefault();
		e.stoppropagation();

		this.transitiontime();

		this.initiated = true;
		this.moved = false;
		this.lastpointx	= point.pagex;
		this.lastpointy	= point.pagey;

		this.starttime	= utils.gettime();

		if ( !this.options.disabletouch ) {
			utils.addevent(window, 'touchmove', this);
		}
		if ( !this.options.disablepointer ) {
			utils.addevent(window, utils.prefixpointerevent('pointermove'), this);
		}
		if ( !this.options.disablemouse ) {
			utils.addevent(window, 'mousemove', this);
		}

		this.scroller._execevent('beforescrollstart');
	},

	_move: function (e) {
		var point = e.touches ? e.touches[0] : e,
			deltax, deltay,
			newx, newy,
			timestamp = utils.gettime();

		if ( !this.moved ) {
			this.scroller._execevent('scrollstart');
		}

		this.moved = true;

		deltax = point.pagex - this.lastpointx;
		this.lastpointx = point.pagex;

		deltay = point.pagey - this.lastpointy;
		this.lastpointy = point.pagey;

		newx = this.x + deltax;
		newy = this.y + deltay;

		this._pos(newx, newy);


		if ( this.scroller.options.probetype == 1 && timestamp - this.starttime > 300 ) {
			this.starttime = timestamp;
			this.scroller._execevent('scroll');
		} else if ( this.scroller.options.probetype > 1 ) {
			this.scroller._execevent('scroll');
		}


// insert point: indicator._move

		e.preventdefault();
		e.stoppropagation();
	},

	_end: function (e) {
		if ( !this.initiated ) {
			return;
		}

		this.initiated = false;

		e.preventdefault();
		e.stoppropagation();

		utils.removeevent(window, 'touchmove', this);
		utils.removeevent(window, utils.prefixpointerevent('pointermove'), this);
		utils.removeevent(window, 'mousemove', this);

		if ( this.scroller.options.snap ) {
			var snap = this.scroller._nearestsnap(this.scroller.x, this.scroller.y);

			var time = this.options.snapspeed || math.max(
					math.max(
						math.min(math.abs(this.scroller.x - snap.x), 1000),
						math.min(math.abs(this.scroller.y - snap.y), 1000)
					), 300);

			if ( this.scroller.x != snap.x || this.scroller.y != snap.y ) {
				this.scroller.directionx = 0;
				this.scroller.directiony = 0;
				this.scroller.currentpage = snap;
				this.scroller.scrollto(snap.x, snap.y, time, this.scroller.options.bounceeasing);
			}
		}

		if ( this.moved ) {
			this.scroller._execevent('scrollend');
		}
	},

	transitiontime: function (time) {
		time = time || 0;
		var durationprop = utils.style.transitionduration;
		if(!durationprop) {
			return;
		}

		this.indicatorstyle[durationprop] = time + 'ms';

		if ( !time && utils.isbadandroid ) {
			this.indicatorstyle[durationprop] = '0.0001ms';
			// remove 0.0001ms
			var self = this;
			raf(function() {
				if(self.indicatorstyle[durationprop] === '0.0001ms') {
					self.indicatorstyle[durationprop] = '0s';
				}
			});
		}
	},

	transitiontimingfunction: function (easing) {
		this.indicatorstyle[utils.style.transitiontimingfunction] = easing;
	},

	refresh: function () {
		this.transitiontime();

		if ( this.options.listenx && !this.options.listeny ) {
			this.indicatorstyle.display = this.scroller.hashorizontalscroll ? 'block' : 'none';
		} else if ( this.options.listeny && !this.options.listenx ) {
			this.indicatorstyle.display = this.scroller.hasverticalscroll ? 'block' : 'none';
		} else {
			this.indicatorstyle.display = this.scroller.hashorizontalscroll || this.scroller.hasverticalscroll ? 'block' : 'none';
		}

		if ( this.scroller.hashorizontalscroll && this.scroller.hasverticalscroll ) {
			utils.addclass(this.wrapper, 'iscrollbothscrollbars');
			utils.removeclass(this.wrapper, 'iscrolllonescrollbar');

			if ( this.options.defaultscrollbars && this.options.customstyle ) {
				if ( this.options.listenx ) {
					this.wrapper.style.right = '8px';
				} else {
					this.wrapper.style.bottom = '8px';
				}
			}
		} else {
			utils.removeclass(this.wrapper, 'iscrollbothscrollbars');
			utils.addclass(this.wrapper, 'iscrolllonescrollbar');

			if ( this.options.defaultscrollbars && this.options.customstyle ) {
				if ( this.options.listenx ) {
					this.wrapper.style.right = '2px';
				} else {
					this.wrapper.style.bottom = '2px';
				}
			}
		}

		utils.getrect(this.wrapper);	// force refresh

		if ( this.options.listenx ) {
			this.wrapperwidth = this.wrapper.clientwidth;
			if ( this.options.resize ) {
				this.indicatorwidth = math.max(math.round(this.wrapperwidth * this.wrapperwidth / (this.scroller.scrollerwidth || this.wrapperwidth || 1)), 8);
				this.indicatorstyle.width = this.indicatorwidth + 'px';
			} else {
				this.indicatorwidth = this.indicator.clientwidth;
			}

			this.maxposx = this.wrapperwidth - this.indicatorwidth;

			if ( this.options.shrink == 'clip' ) {
				this.minboundaryx = -this.indicatorwidth + 8;
				this.maxboundaryx = this.wrapperwidth - 8;
			} else {
				this.minboundaryx = 0;
				this.maxboundaryx = this.maxposx;
			}

			this.sizeratiox = this.options.speedratiox || (this.scroller.maxscrollx && (this.maxposx / this.scroller.maxscrollx));
		}

		if ( this.options.listeny ) {
			this.wrapperheight = this.wrapper.clientheight;
			if ( this.options.resize ) {
				this.indicatorheight = math.max(math.round(this.wrapperheight * this.wrapperheight / (this.scroller.scrollerheight || this.wrapperheight || 1)), 8);
				this.indicatorstyle.height = this.indicatorheight + 'px';
			} else {
				this.indicatorheight = this.indicator.clientheight;
			}

			this.maxposy = this.wrapperheight - this.indicatorheight;

			if ( this.options.shrink == 'clip' ) {
				this.minboundaryy = -this.indicatorheight + 8;
				this.maxboundaryy = this.wrapperheight - 8;
			} else {
				this.minboundaryy = 0;
				this.maxboundaryy = this.maxposy;
			}

			this.maxposy = this.wrapperheight - this.indicatorheight;
			this.sizeratioy = this.options.speedratioy || (this.scroller.maxscrolly && (this.maxposy / this.scroller.maxscrolly));
		}

		this.updateposition();
	},

	updateposition: function () {
		var x = this.options.listenx && math.round(this.sizeratiox * this.scroller.x) || 0,
			y = this.options.listeny && math.round(this.sizeratioy * this.scroller.y) || 0;

		if ( !this.options.ignoreboundaries ) {
			if ( x < this.minboundaryx ) {
				if ( this.options.shrink == 'scale' ) {
					this.width = math.max(this.indicatorwidth + x, 8);
					this.indicatorstyle.width = this.width + 'px';
				}
				x = this.minboundaryx;
			} else if ( x > this.maxboundaryx ) {
				if ( this.options.shrink == 'scale' ) {
					this.width = math.max(this.indicatorwidth - (x - this.maxposx), 8);
					this.indicatorstyle.width = this.width + 'px';
					x = this.maxposx + this.indicatorwidth - this.width;
				} else {
					x = this.maxboundaryx;
				}
			} else if ( this.options.shrink == 'scale' && this.width != this.indicatorwidth ) {
				this.width = this.indicatorwidth;
				this.indicatorstyle.width = this.width + 'px';
			}

			if ( y < this.minboundaryy ) {
				if ( this.options.shrink == 'scale' ) {
					this.height = math.max(this.indicatorheight + y * 3, 8);
					this.indicatorstyle.height = this.height + 'px';
				}
				y = this.minboundaryy;
			} else if ( y > this.maxboundaryy ) {
				if ( this.options.shrink == 'scale' ) {
					this.height = math.max(this.indicatorheight - (y - this.maxposy) * 3, 8);
					this.indicatorstyle.height = this.height + 'px';
					y = this.maxposy + this.indicatorheight - this.height;
				} else {
					y = this.maxboundaryy;
				}
			} else if ( this.options.shrink == 'scale' && this.height != this.indicatorheight ) {
				this.height = this.indicatorheight;
				this.indicatorstyle.height = this.height + 'px';
			}
		}

		this.x = x;
		this.y = y;

		if ( this.scroller.options.usetransform ) {
			this.indicatorstyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.scroller.translatez;
		} else {
			this.indicatorstyle.left = x + 'px';
			this.indicatorstyle.top = y + 'px';
		}
	},

	_pos: function (x, y) {
		if ( x < 0 ) {
			x = 0;
		} else if ( x > this.maxposx ) {
			x = this.maxposx;
		}

		if ( y < 0 ) {
			y = 0;
		} else if ( y > this.maxposy ) {
			y = this.maxposy;
		}

		x = this.options.listenx ? math.round(x / this.sizeratiox) : this.scroller.x;
		y = this.options.listeny ? math.round(y / this.sizeratioy) : this.scroller.y;

		this.scroller.scrollto(x, y);
	},

	fade: function (val, hold) {
		if ( hold && !this.visible ) {
			return;
		}

		cleartimeout(this.fadetimeout);
		this.fadetimeout = null;

		var time = val ? 250 : 500,
			delay = val ? 0 : 300;

		val = val ? '1' : '0';

		this.wrapperstyle[utils.style.transitionduration] = time + 'ms';

		this.fadetimeout = settimeout((function (val) {
			this.wrapperstyle.opacity = val;
			this.visible = +val;
		}).bind(this, val), delay);
	}
};

iscroll.utils = utils;

if ( typeof module != 'undefined' && module.exports ) {
	module.exports = iscroll;
} else if ( typeof define == 'function' && define.amd ) {
        define( function () { return iscroll; } );
} else {
	window.iscroll = iscroll;
}

})(window, document, math);


/**大图、相册查看器
 * spotlight.js v0.7.8 (bundle)
 * copyright 2019-2021 nextapps gmbh
 * author: thomas wilkerling
 * licence: apache-2.0
 * https://github.com/nextapps-de/spotlight
 */
(function(){'use strict';var aa=document.createelement("style");aa.innerhtml="@keyframes pulsate{0%,to{opacity:1}50%{opacity:.2}}#spotlight{position:fixed;top:-1px;bottom:-1px;width:100%;z-index:99999;color:#fff;background-color:rgba(0,0,0,.8);opacity:0;overflow:hidden;-webkit-user-select:none;-ms-user-select:none;user-select:none;transition:opacity .2s ease-out;font-family:arial,sans-serif;font-size:16px;font-weight:400;contain:strict;touch-action:none;pointer-events:none}#spotlight.show{opacity:1;transition:none;pointer-events:auto}#spotlight.white{color:#212529;background-color:#fff}#spotlight.white .spl-next,#spotlight.white .spl-page~*,#spotlight.white .spl-prev,#spotlight.white .spl-spinner{filter:invert(1)}#spotlight.white .spl-progress{background-color:rgba(0,0,0,.35)}#spotlight.white .spl-footer,#spotlight.white .spl-header{background-color:rgba(255,255,255,.65)}#spotlight.white .spl-button{background:#212529;color:#fff}.spl-footer,.spl-header{background-color:rgba(0,0,0,.45)}#spotlight .contain,#spotlight .cover{object-fit:cover;height:100%;width:100%}#spotlight .contain{object-fit:contain}#spotlight .autofit{object-fit:none;width:auto;height:auto;max-height:none;max-width:none;transition:none}.spl-scene,.spl-spinner,.spl-track{width:100%;height:100%;position:absolute}.spl-track{contain:strict}.spl-spinner{background-position:center;background-repeat:no-repeat;background-size:42px;opacity:0}.spl-spinner.spin{background-image:url(data:image/svg+xml;base64,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);transition:opacity .2s linear .25s;opacity:1}.spl-spinner.error{background-image:url(data:image/svg+xml;base64,phn2zybozwlnahq9ijmyiib3awr0ad0imziiihzpzxdcb3g9ijagmcazmiazmiigeg1sbnm9imh0dha6ly93d3cudzmub3jnlziwmdavc3znij48cgf0acbmawxspsijzmzmiibkpsjnmtysmuexnswxnswwldesmcwzmswxniwxnswxnswwldasmcwxniwxwm0wldjhmtmsmtmsmcwwldesoc40nswzlje0tdyumtqsmjqundvbmtmsmtmsmcwwldesmtysm1ptmcwynmexmywxmywwldasms04ljq1ltmumtrmmjuuodysny41nuexmywxmywwldasmswxniwyovoiiglkpsjiyw5fc2lnbl9jcm9zc2vkx2npcmnszsivpjwvc3znpg==);background-size:128px;transition:none;opacity:.5}.spl-scene{transition:transform .65s cubic-bezier(.1,1,.1,1);contain:layout size;will-change:transform}.spl-pane>*{position:absolute;width:auto;height:auto;max-width:100%;max-height:100%;left:50%;top:50%;margin:0;padding:0;border:0;transform:translate(-50%,-50%) scale(1);transition:transform .65s cubic-bezier(.3,1,.3,1),opacity .65s ease;contain:layout 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