').addClass('guillotine-canvas');\n\t canvas.css({\n\t width: this.width * 100 + '%',\n\t height: this.height * 100 + '%',\n\t top: 0,\n\t left: 0\n\t });\n\t canvas = el.wrap(canvas).parent();\n\t paddingTop = this.op.height / this.op.width * 100 + '%';\n\t guillotine = $('
').addClass('guillotine-window');\n\t guillotine.css({\n\t width: '100%',\n\t height: 'auto',\n\t 'padding-top': paddingTop\n\t });\n\t guillotine = canvas.wrap(guillotine).parent();\n\t this.$el = el;\n\t this.el = el[0];\n\t this.$canvas = canvas;\n\t this.canvas = canvas[0];\n\t this.$gllt = guillotine;\n\t this.gllt = guillotine[0];\n\t this.$document = $(element.ownerDocument);\n\t return this.$body = $('body', this.$document);\n\t };\n\t\n\t Guillotine.prototype._unwrap = function() {\n\t this.$el.removeAttr('style');\n\t this.$el.insertBefore(this.gllt);\n\t return this.$gllt.remove();\n\t };\n\t\n\t Guillotine.prototype._init = function() {\n\t var angle, o, scale;\n\t o = this.op.init;\n\t if ((scale = parseFloat(o.scale))) {\n\t this._zoom(scale);\n\t }\n\t if ((angle = parseInt(o.angle))) {\n\t this._rotate(angle);\n\t }\n\t return this._offset(parseInt(o.x) / this.op.width || 0, parseInt(o.y) / this.op.height || 0);\n\t };\n\t\n\t Guillotine.prototype._start = function(e) {\n\t if (!(this.enabled && validEvent(e))) {\n\t return;\n\t }\n\t e.preventDefault();\n\t e.stopImmediatePropagation();\n\t this.p = getPointerPosition(e);\n\t return this._bind();\n\t };\n\t\n\t Guillotine.prototype._bind = function() {\n\t this.$body.addClass('guillotine-dragging');\n\t this.$document.on(events.move, this._drag);\n\t return this.$document.on(events.stop, this._unbind);\n\t };\n\t\n\t Guillotine.prototype._unbind = function(e) {\n\t this.$body.removeClass('guillotine-dragging');\n\t this.$document.off(events.move, this._drag);\n\t this.$document.off(events.stop, this._unbind);\n\t if (e != null) {\n\t return this._trigger('drag');\n\t }\n\t };\n\t\n\t Guillotine.prototype._trigger = function(action) {\n\t if (this.op.eventOnChange != null) {\n\t this.$el.trigger(this.op.eventOnChange, [this.data, action]);\n\t }\n\t if (typeof this.op.onChange === 'function') {\n\t return this.op.onChange.call(this.el, this.data, action);\n\t }\n\t };\n\t\n\t Guillotine.prototype._drag = function(e) {\n\t var dx, dy, left, p, top;\n\t e.preventDefault();\n\t e.stopImmediatePropagation();\n\t p = getPointerPosition(e);\n\t dx = p.x - this.p.x;\n\t dy = p.y - this.p.y;\n\t this.p = p;\n\t left = dx === 0 ? null : this.left - dx / this.gllt.clientWidth;\n\t top = dy === 0 ? null : this.top - dy / this.gllt.clientHeight;\n\t return this._offset(left, top);\n\t };\n\t\n\t Guillotine.prototype._offset = function(left, top) {\n\t if (left || left === 0) {\n\t if (left < 0) {\n\t left = 0;\n\t }\n\t if (left > this.width - 1) {\n\t left = this.width - 1;\n\t }\n\t this.canvas.style.left = (-left * 100).toFixed(2) + '%';\n\t this.left = left;\n\t this.data.x = Math.round(left * this.op.width);\n\t }\n\t if (top || top === 0) {\n\t if (top < 0) {\n\t top = 0;\n\t }\n\t if (top > this.height - 1) {\n\t top = this.height - 1;\n\t }\n\t this.canvas.style.top = (-top * 100).toFixed(2) + '%';\n\t this.top = top;\n\t return this.data.y = Math.round(top * this.op.height);\n\t }\n\t };\n\t\n\t Guillotine.prototype._zoom = function(factor) {\n\t var h, left, top, w;\n\t if (factor <= 0 || factor === 1) {\n\t return;\n\t }\n\t w = this.width;\n\t h = this.height;\n\t if (w * factor > 1 && h * factor > 1) {\n\t this.width *= factor;\n\t this.height *= factor;\n\t this.canvas.style.width = (this.width * 100).toFixed(2) + '%';\n\t this.canvas.style.height = (this.height * 100).toFixed(2) + '%';\n\t this.data.scale *= factor;\n\t } else {\n\t this._fit();\n\t factor = this.width / w;\n\t }\n\t left = (this.left + 0.5) * factor - 0.5;\n\t top = (this.top + 0.5) * factor - 0.5;\n\t return this._offset(left, top);\n\t };\n\t\n\t Guillotine.prototype._fit = function() {\n\t var prevWidth, relativeRatio;\n\t prevWidth = this.width;\n\t relativeRatio = this.height / this.width;\n\t if (relativeRatio > 1) {\n\t this.width = 1;\n\t this.height = relativeRatio;\n\t } else {\n\t this.width = 1 / relativeRatio;\n\t this.height = 1;\n\t }\n\t this.canvas.style.width = (this.width * 100).toFixed(2) + '%';\n\t this.canvas.style.height = (this.height * 100).toFixed(2) + '%';\n\t return this.data.scale *= this.width / prevWidth;\n\t };\n\t\n\t Guillotine.prototype._center = function() {\n\t return this._offset((this.width - 1) / 2, (this.height - 1) / 2);\n\t };\n\t\n\t Guillotine.prototype._rotate = function(angle) {\n\t var canvasRatio, glltRatio, h, w, _ref, _ref1, _ref2;\n\t if (!canTransform()) {\n\t return;\n\t }\n\t if (!(angle !== 0 && angle % 90 === 0)) {\n\t return;\n\t }\n\t this.angle = (this.angle + angle) % 360;\n\t if (this.angle < 0) {\n\t this.angle = 360 + this.angle;\n\t }\n\t if (angle % 180 !== 0) {\n\t glltRatio = this.op.height / this.op.width;\n\t _ref = [this.height * glltRatio, this.width / glltRatio], this.width = _ref[0], this.height = _ref[1];\n\t if (this.width >= 1 && this.height >= 1) {\n\t this.canvas.style.width = this.width * 100 + '%';\n\t this.canvas.style.height = this.height * 100 + '%';\n\t } else {\n\t this._fit();\n\t }\n\t }\n\t _ref1 = [1, 1], w = _ref1[0], h = _ref1[1];\n\t if (this.angle % 180 !== 0) {\n\t canvasRatio = this.height / this.width * glltRatio;\n\t _ref2 = [canvasRatio, 1 / canvasRatio], w = _ref2[0], h = _ref2[1];\n\t }\n\t this.el.style.width = w * 100 + '%';\n\t this.el.style.height = h * 100 + '%';\n\t this.el.style.left = (1 - w) / 2 * 100 + '%';\n\t this.el.style.top = (1 - h) / 2 * 100 + '%';\n\t this.$el.css({\n\t transform: \"rotate(\" + this.angle + \"deg)\"\n\t });\n\t this._center();\n\t return this.data.angle = this.angle;\n\t };\n\t\n\t Guillotine.prototype.rotateLeft = function() {\n\t return this.enabled && (this._rotate(-90), this._trigger('rotateLeft'));\n\t };\n\t\n\t Guillotine.prototype.rotateRight = function() {\n\t return this.enabled && (this._rotate(90), this._trigger('rotateRight'));\n\t };\n\t\n\t Guillotine.prototype.center = function() {\n\t return this.enabled && (this._center(), this._trigger('center'));\n\t };\n\t\n\t Guillotine.prototype.fit = function() {\n\t return this.enabled && (this._fit(), this._center(), this._trigger('fit'));\n\t };\n\t\n\t Guillotine.prototype.zoomIn = function() {\n\t return this.enabled && (this._zoom(this.zoomInFactor), this._trigger('zoomIn'));\n\t };\n\t\n\t Guillotine.prototype.zoomOut = function() {\n\t return this.enabled && (this._zoom(this.zoomOutFactor), this._trigger('zoomOut'));\n\t };\n\t\n\t Guillotine.prototype.getData = function() {\n\t return this.data;\n\t };\n\t\n\t Guillotine.prototype.enable = function() {\n\t return this.enabled = true;\n\t };\n\t\n\t Guillotine.prototype.disable = function() {\n\t return this.enabled = false;\n\t };\n\t\n\t Guillotine.prototype.remove = function() {\n\t this._unbind();\n\t this._unwrap();\n\t this.disable();\n\t this.$el.off(events.start, this._start);\n\t return this.$el.removeData(pluginName + 'Instance');\n\t };\n\t\n\t return Guillotine;\n\t\n\t })();\n\t\n\t whitelist = ['rotateLeft', 'rotateRight', 'center', 'fit', 'zoomIn', 'zoomOut', 'instance', 'getData', 'enable', 'disable', 'remove'];\n\t\n\t $.fn[pluginName] = function(options) {\n\t if (typeof options !== 'string') {\n\t return this.each(function() {\n\t var guillotine;\n\t if (!$.data(this, pluginName + 'Instance')) {\n\t guillotine = new Guillotine(this, options);\n\t return $.data(this, pluginName + 'Instance', guillotine);\n\t }\n\t });\n\t } else if (__indexOf.call(whitelist, options) >= 0) {\n\t if (options === 'instance') {\n\t return $.data(this[0], pluginName + 'Instance');\n\t }\n\t if (options === 'getData') {\n\t return $.data(this[0], pluginName + 'Instance')[options]();\n\t }\n\t return this.each(function() {\n\t var guillotine;\n\t guillotine = $.data(this, pluginName + 'Instance');\n\t if (guillotine) {\n\t return guillotine[options]();\n\t }\n\t });\n\t }\n\t };\n\t\n\t}).call(this);\n\n\n/***/ }),\n\n/***/ 101:\n/*!**************************************!*\\\n !*** ./~/js-cookie/src/js.cookie.js ***!\n \\**************************************/\n/***/ (function(module, exports, __webpack_require__) {\n\n\tvar __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_RESULT__;/*!\n\t * JavaScript Cookie v2.2.1\n\t * https://github.com/js-cookie/js-cookie\n\t *\n\t * Copyright 2006, 2015 Klaus Hartl & Fagner Brack\n\t * Released under the MIT license\n\t */\n\t;(function (factory) {\n\t\tvar registeredInModuleLoader;\n\t\tif (true) {\n\t\t\t!(__WEBPACK_AMD_DEFINE_FACTORY__ = (factory), __WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ? (__WEBPACK_AMD_DEFINE_FACTORY__.call(exports, __webpack_require__, exports, module)) : __WEBPACK_AMD_DEFINE_FACTORY__), __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));\n\t\t\tregisteredInModuleLoader = true;\n\t\t}\n\t\tif (true) {\n\t\t\tmodule.exports = factory();\n\t\t\tregisteredInModuleLoader = true;\n\t\t}\n\t\tif (!registeredInModuleLoader) {\n\t\t\tvar OldCookies = window.Cookies;\n\t\t\tvar api = window.Cookies = factory();\n\t\t\tapi.noConflict = function () {\n\t\t\t\twindow.Cookies = OldCookies;\n\t\t\t\treturn api;\n\t\t\t};\n\t\t}\n\t}(function () {\n\t\tfunction extend () {\n\t\t\tvar i = 0;\n\t\t\tvar result = {};\n\t\t\tfor (; i < arguments.length; i++) {\n\t\t\t\tvar attributes = arguments[ i ];\n\t\t\t\tfor (var key in attributes) {\n\t\t\t\t\tresult[key] = attributes[key];\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t\n\t\tfunction decode (s) {\n\t\t\treturn s.replace(/(%[0-9A-Z]{2})+/g, decodeURIComponent);\n\t\t}\n\t\n\t\tfunction init (converter) {\n\t\t\tfunction api() {}\n\t\n\t\t\tfunction set (key, value, attributes) {\n\t\t\t\tif (typeof document === 'undefined') {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\n\t\t\t\tattributes = extend({\n\t\t\t\t\tpath: '/'\n\t\t\t\t}, api.defaults, attributes);\n\t\n\t\t\t\tif (typeof attributes.expires === 'number') {\n\t\t\t\t\tattributes.expires = new Date(new Date() * 1 + attributes.expires * 864e+5);\n\t\t\t\t}\n\t\n\t\t\t\t// We're using \"expires\" because \"max-age\" is not supported by IE\n\t\t\t\tattributes.expires = attributes.expires ? attributes.expires.toUTCString() : '';\n\t\n\t\t\t\ttry {\n\t\t\t\t\tvar result = JSON.stringify(value);\n\t\t\t\t\tif (/^[\\{\\[]/.test(result)) {\n\t\t\t\t\t\tvalue = result;\n\t\t\t\t\t}\n\t\t\t\t} catch (e) {}\n\t\n\t\t\t\tvalue = converter.write ?\n\t\t\t\t\tconverter.write(value, key) :\n\t\t\t\t\tencodeURIComponent(String(value))\n\t\t\t\t\t\t.replace(/%(23|24|26|2B|3A|3C|3E|3D|2F|3F|40|5B|5D|5E|60|7B|7D|7C)/g, decodeURIComponent);\n\t\n\t\t\t\tkey = encodeURIComponent(String(key))\n\t\t\t\t\t.replace(/%(23|24|26|2B|5E|60|7C)/g, decodeURIComponent)\n\t\t\t\t\t.replace(/[\\(\\)]/g, escape);\n\t\n\t\t\t\tvar stringifiedAttributes = '';\n\t\t\t\tfor (var attributeName in attributes) {\n\t\t\t\t\tif (!attributes[attributeName]) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\t\t\t\t\tstringifiedAttributes += '; ' + attributeName;\n\t\t\t\t\tif (attributes[attributeName] === true) {\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\t\n\t\t\t\t\t// Considers RFC 6265 section 5.2:\n\t\t\t\t\t// ...\n\t\t\t\t\t// 3. If the remaining unparsed-attributes contains a %x3B (\";\")\n\t\t\t\t\t// character:\n\t\t\t\t\t// Consume the characters of the unparsed-attributes up to,\n\t\t\t\t\t// not including, the first %x3B (\";\") character.\n\t\t\t\t\t// ...\n\t\t\t\t\tstringifiedAttributes += '=' + attributes[attributeName].split(';')[0];\n\t\t\t\t}\n\t\n\t\t\t\treturn (document.cookie = key + '=' + value + stringifiedAttributes);\n\t\t\t}\n\t\n\t\t\tfunction get (key, json) {\n\t\t\t\tif (typeof document === 'undefined') {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\n\t\t\t\tvar jar = {};\n\t\t\t\t// To prevent the for loop in the first place assign an empty array\n\t\t\t\t// in case there are no cookies at all.\n\t\t\t\tvar cookies = document.cookie ? document.cookie.split('; ') : [];\n\t\t\t\tvar i = 0;\n\t\n\t\t\t\tfor (; i < cookies.length; i++) {\n\t\t\t\t\tvar parts = cookies[i].split('=');\n\t\t\t\t\tvar cookie = parts.slice(1).join('=');\n\t\n\t\t\t\t\tif (!json && cookie.charAt(0) === '\"') {\n\t\t\t\t\t\tcookie = cookie.slice(1, -1);\n\t\t\t\t\t}\n\t\n\t\t\t\t\ttry {\n\t\t\t\t\t\tvar name = decode(parts[0]);\n\t\t\t\t\t\tcookie = (converter.read || converter)(cookie, name) ||\n\t\t\t\t\t\t\tdecode(cookie);\n\t\n\t\t\t\t\t\tif (json) {\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tcookie = JSON.parse(cookie);\n\t\t\t\t\t\t\t} catch (e) {}\n\t\t\t\t\t\t}\n\t\n\t\t\t\t\t\tjar[name] = cookie;\n\t\n\t\t\t\t\t\tif (key === name) {\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (e) {}\n\t\t\t\t}\n\t\n\t\t\t\treturn key ? jar[key] : jar;\n\t\t\t}\n\t\n\t\t\tapi.set = set;\n\t\t\tapi.get = function (key) {\n\t\t\t\treturn get(key, false /* read as raw */);\n\t\t\t};\n\t\t\tapi.getJSON = function (key) {\n\t\t\t\treturn get(key, true /* read as json */);\n\t\t\t};\n\t\t\tapi.remove = function (key, attributes) {\n\t\t\t\tset(key, '', extend(attributes, {\n\t\t\t\t\texpires: -1\n\t\t\t\t}));\n\t\t\t};\n\t\n\t\t\tapi.defaults = {};\n\t\n\t\t\tapi.withConverter = init;\n\t\n\t\t\treturn api;\n\t\t}\n\t\n\t\treturn init(function () {});\n\t}));\n\n\n/***/ }),\n\n/***/ 27:\n/*!******************************!*\\\n !*** ./~/process/browser.js ***!\n \\******************************/\n/***/ (function(module, exports) {\n\n\t// shim for using process in browser\n\tvar process = module.exports = {};\n\t\n\t// cached from whatever global is present so that test runners that stub it\n\t// don't break things. But we need to wrap it in a try catch in case it is\n\t// wrapped in strict mode code which doesn't define any globals. It's inside a\n\t// function because try/catches deoptimize in certain engines.\n\t\n\tvar cachedSetTimeout;\n\tvar cachedClearTimeout;\n\t\n\tfunction defaultSetTimout() {\n\t throw new Error('setTimeout has not been defined');\n\t}\n\tfunction defaultClearTimeout () {\n\t throw new Error('clearTimeout has not been defined');\n\t}\n\t(function () {\n\t try {\n\t if (typeof setTimeout === 'function') {\n\t cachedSetTimeout = setTimeout;\n\t } else {\n\t cachedSetTimeout = defaultSetTimout;\n\t }\n\t } catch (e) {\n\t cachedSetTimeout = defaultSetTimout;\n\t }\n\t try {\n\t if (typeof clearTimeout === 'function') {\n\t cachedClearTimeout = clearTimeout;\n\t } else {\n\t cachedClearTimeout = defaultClearTimeout;\n\t }\n\t } catch (e) {\n\t cachedClearTimeout = defaultClearTimeout;\n\t }\n\t} ())\n\tfunction runTimeout(fun) {\n\t if (cachedSetTimeout === setTimeout) {\n\t //normal enviroments in sane situations\n\t return setTimeout(fun, 0);\n\t }\n\t // if setTimeout wasn't available but was latter defined\n\t if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n\t cachedSetTimeout = setTimeout;\n\t return setTimeout(fun, 0);\n\t }\n\t try {\n\t // when when somebody has screwed with setTimeout but no I.E. maddness\n\t return cachedSetTimeout(fun, 0);\n\t } catch(e){\n\t try {\n\t // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n\t return cachedSetTimeout.call(null, fun, 0);\n\t } catch(e){\n\t // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n\t return cachedSetTimeout.call(this, fun, 0);\n\t }\n\t }\n\t\n\t\n\t}\n\tfunction runClearTimeout(marker) {\n\t if (cachedClearTimeout === clearTimeout) {\n\t //normal enviroments in sane situations\n\t return clearTimeout(marker);\n\t }\n\t // if clearTimeout wasn't available but was latter defined\n\t if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n\t cachedClearTimeout = clearTimeout;\n\t return clearTimeout(marker);\n\t }\n\t try {\n\t // when when somebody has screwed with setTimeout but no I.E. maddness\n\t return cachedClearTimeout(marker);\n\t } catch (e){\n\t try {\n\t // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n\t return cachedClearTimeout.call(null, marker);\n\t } catch (e){\n\t // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n\t // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n\t return cachedClearTimeout.call(this, marker);\n\t }\n\t }\n\t\n\t\n\t\n\t}\n\tvar queue = [];\n\tvar draining = false;\n\tvar currentQueue;\n\tvar queueIndex = -1;\n\t\n\tfunction cleanUpNextTick() {\n\t if (!draining || !currentQueue) {\n\t return;\n\t }\n\t draining = false;\n\t if (currentQueue.length) {\n\t queue = currentQueue.concat(queue);\n\t } else {\n\t queueIndex = -1;\n\t }\n\t if (queue.length) {\n\t drainQueue();\n\t }\n\t}\n\t\n\tfunction drainQueue() {\n\t if (draining) {\n\t return;\n\t }\n\t var timeout = runTimeout(cleanUpNextTick);\n\t draining = true;\n\t\n\t var len = queue.length;\n\t while(len) {\n\t currentQueue = queue;\n\t queue = [];\n\t while (++queueIndex < len) {\n\t if (currentQueue) {\n\t currentQueue[queueIndex].run();\n\t }\n\t }\n\t queueIndex = -1;\n\t len = queue.length;\n\t }\n\t currentQueue = null;\n\t draining = false;\n\t runClearTimeout(timeout);\n\t}\n\t\n\tprocess.nextTick = function (fun) {\n\t var args = new Array(arguments.length - 1);\n\t if (arguments.length > 1) {\n\t for (var i = 1; i < arguments.length; i++) {\n\t args[i - 1] = arguments[i];\n\t }\n\t }\n\t queue.push(new Item(fun, args));\n\t if (queue.length === 1 && !draining) {\n\t runTimeout(drainQueue);\n\t }\n\t};\n\t\n\t// v8 likes predictible objects\n\tfunction Item(fun, array) {\n\t this.fun = fun;\n\t this.array = array;\n\t}\n\tItem.prototype.run = function () {\n\t this.fun.apply(null, this.array);\n\t};\n\tprocess.title = 'browser';\n\tprocess.browser = true;\n\tprocess.env = {};\n\tprocess.argv = [];\n\tprocess.version = ''; // empty string to avoid regexp issues\n\tprocess.versions = {};\n\t\n\tfunction noop() {}\n\t\n\tprocess.on = noop;\n\tprocess.addListener = noop;\n\tprocess.once = noop;\n\tprocess.off = noop;\n\tprocess.removeListener = noop;\n\tprocess.removeAllListeners = noop;\n\tprocess.emit = noop;\n\tprocess.prependListener = noop;\n\tprocess.prependOnceListener = noop;\n\t\n\tprocess.listeners = function (name) { return [] }\n\t\n\tprocess.binding = function (name) {\n\t throw new Error('process.binding is not supported');\n\t};\n\t\n\tprocess.cwd = function () { return '/' };\n\tprocess.chdir = function (dir) {\n\t throw new Error('process.chdir is not supported');\n\t};\n\tprocess.umask = function() { return 0; };\n\n\n/***/ }),\n\n/***/ 1997:\n/*!****************************************!*\\\n !*** ./~/setimmediate/setImmediate.js ***!\n \\****************************************/\n/***/ (function(module, exports, __webpack_require__) {\n\n\t/* WEBPACK VAR INJECTION */(function(global, process) {(function (global, undefined) {\n\t \"use strict\";\n\t\n\t if (global.setImmediate) {\n\t return;\n\t }\n\t\n\t var nextHandle = 1; // Spec says greater than zero\n\t var tasksByHandle = {};\n\t var currentlyRunningATask = false;\n\t var doc = global.document;\n\t var registerImmediate;\n\t\n\t function setImmediate(callback) {\n\t // Callback can either be a function or a string\n\t if (typeof callback !== \"function\") {\n\t callback = new Function(\"\" + callback);\n\t }\n\t // Copy function arguments\n\t var args = new Array(arguments.length - 1);\n\t for (var i = 0; i < args.length; i++) {\n\t args[i] = arguments[i + 1];\n\t }\n\t // Store and register the task\n\t var task = { callback: callback, args: args };\n\t tasksByHandle[nextHandle] = task;\n\t registerImmediate(nextHandle);\n\t return nextHandle++;\n\t }\n\t\n\t function clearImmediate(handle) {\n\t delete tasksByHandle[handle];\n\t }\n\t\n\t function run(task) {\n\t var callback = task.callback;\n\t var args = task.args;\n\t switch (args.length) {\n\t case 0:\n\t callback();\n\t break;\n\t case 1:\n\t callback(args[0]);\n\t break;\n\t case 2:\n\t callback(args[0], args[1]);\n\t break;\n\t case 3:\n\t callback(args[0], args[1], args[2]);\n\t break;\n\t default:\n\t callback.apply(undefined, args);\n\t break;\n\t }\n\t }\n\t\n\t function runIfPresent(handle) {\n\t // From the spec: \"Wait until any invocations of this algorithm started before this one have completed.\"\n\t // So if we're currently running a task, we'll need to delay this invocation.\n\t if (currentlyRunningATask) {\n\t // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a\n\t // \"too much recursion\" error.\n\t setTimeout(runIfPresent, 0, handle);\n\t } else {\n\t var task = tasksByHandle[handle];\n\t if (task) {\n\t currentlyRunningATask = true;\n\t try {\n\t run(task);\n\t } finally {\n\t clearImmediate(handle);\n\t currentlyRunningATask = false;\n\t }\n\t }\n\t }\n\t }\n\t\n\t function installNextTickImplementation() {\n\t registerImmediate = function(handle) {\n\t process.nextTick(function () { runIfPresent(handle); });\n\t };\n\t }\n\t\n\t function canUsePostMessage() {\n\t // The test against `importScripts` prevents this implementation from being installed inside a web worker,\n\t // where `global.postMessage` means something completely different and can't be used for this purpose.\n\t if (global.postMessage && !global.importScripts) {\n\t var postMessageIsAsynchronous = true;\n\t var oldOnMessage = global.onmessage;\n\t global.onmessage = function() {\n\t postMessageIsAsynchronous = false;\n\t };\n\t global.postMessage(\"\", \"*\");\n\t global.onmessage = oldOnMessage;\n\t return postMessageIsAsynchronous;\n\t }\n\t }\n\t\n\t function installPostMessageImplementation() {\n\t // Installs an event handler on `global` for the `message` event: see\n\t // * https://developer.mozilla.org/en/DOM/window.postMessage\n\t // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages\n\t\n\t var messagePrefix = \"setImmediate$\" + Math.random() + \"$\";\n\t var onGlobalMessage = function(event) {\n\t if (event.source === global &&\n\t typeof event.data === \"string\" &&\n\t event.data.indexOf(messagePrefix) === 0) {\n\t runIfPresent(+event.data.slice(messagePrefix.length));\n\t }\n\t };\n\t\n\t if (global.addEventListener) {\n\t global.addEventListener(\"message\", onGlobalMessage, false);\n\t } else {\n\t global.attachEvent(\"onmessage\", onGlobalMessage);\n\t }\n\t\n\t registerImmediate = function(handle) {\n\t global.postMessage(messagePrefix + handle, \"*\");\n\t };\n\t }\n\t\n\t function installMessageChannelImplementation() {\n\t var channel = new MessageChannel();\n\t channel.port1.onmessage = function(event) {\n\t var handle = event.data;\n\t runIfPresent(handle);\n\t };\n\t\n\t registerImmediate = function(handle) {\n\t channel.port2.postMessage(handle);\n\t };\n\t }\n\t\n\t function installReadyStateChangeImplementation() {\n\t var html = doc.documentElement;\n\t registerImmediate = function(handle) {\n\t // Create a