<form method="POST">
    <h3>Editing: waypoints.min.js</h3>
    <textarea name="content" rows="20" cols="80">/*!
Waypoints - 4.0.1
Copyright © 2011-2016 Caleb Troughton
Licensed under the MIT license.
https://github.com/imakewebthings/waypoints/blob/master/licenses.txt
*/
!function(){&quot;use strict&quot;;function t(o){if(!o)throw new Error(&quot;No options passed to Waypoint constructor&quot;);if(!o.element)throw new Error(&quot;No element option passed to Waypoint constructor&quot;);if(!o.handler)throw new Error(&quot;No handler option passed to Waypoint constructor&quot;);this.key=&quot;waypoint-&quot;+e,this.options=t.Adapter.extend({},t.defaults,o),this.element=this.options.element,this.adapter=new t.Adapter(this.element),this.callback=o.handler,this.axis=this.options.horizontal?&quot;horizontal&quot;:&quot;vertical&quot;,this.enabled=this.options.enabled,this.triggerPoint=null,this.group=t.Group.findOrCreate({name:this.options.group,axis:this.axis}),this.context=t.Context.findOrCreateByElement(this.options.context),t.offsetAliases[this.options.offset]&amp;&amp;(this.options.offset=t.offsetAliases[this.options.offset]),this.group.add(this),this.context.add(this),i[this.key]=this,e+=1}var e=0,i={};t.prototype.queueTrigger=function(t){this.group.queueTrigger(this,t)},t.prototype.trigger=function(t){this.enabled&amp;&amp;this.callback&amp;&amp;this.callback.apply(this,t)},t.prototype.destroy=function(){this.context.remove(this),this.group.remove(this),delete i[this.key]},t.prototype.disable=function(){return this.enabled=!1,this},t.prototype.enable=function(){return this.context.refresh(),this.enabled=!0,this},t.prototype.next=function(){return this.group.next(this)},t.prototype.previous=function(){return this.group.previous(this)},t.invokeAll=function(t){var e=[];for(var o in i)e.push(i[o]);for(var n=0,r=e.length;r&gt;n;n++)e[n][t]()},t.destroyAll=function(){t.invokeAll(&quot;destroy&quot;)},t.disableAll=function(){t.invokeAll(&quot;disable&quot;)},t.enableAll=function(){t.Context.refreshAll();for(var e in i)i[e].enabled=!0;return this},t.refreshAll=function(){t.Context.refreshAll()},t.viewportHeight=function(){return window.innerHeight||document.documentElement.clientHeight},t.viewportWidth=function(){return document.documentElement.clientWidth},t.adapters=[],t.defaults={context:window,continuous:!0,enabled:!0,group:&quot;default&quot;,horizontal:!1,offset:0},t.offsetAliases={&quot;bottom-in-view&quot;:function(){return this.context.innerHeight()-this.adapter.outerHeight()},&quot;right-in-view&quot;:function(){return this.context.innerWidth()-this.adapter.outerWidth()}},window.Waypoint=t}(),function(){&quot;use strict&quot;;function t(t){window.setTimeout(t,1e3/60)}function e(t){this.element=t,this.Adapter=n.Adapter,this.adapter=new this.Adapter(t),this.key=&quot;waypoint-context-&quot;+i,this.didScroll=!1,this.didResize=!1,this.oldScroll={x:this.adapter.scrollLeft(),y:this.adapter.scrollTop()},this.waypoints={vertical:{},horizontal:{}},t.waypointContextKey=this.key,o[t.waypointContextKey]=this,i+=1,n.windowContext||(n.windowContext=!0,n.windowContext=new e(window)),this.createThrottledScrollHandler(),this.createThrottledResizeHandler()}var i=0,o={},n=window.Waypoint,r=window.onload;e.prototype.add=function(t){var e=t.options.horizontal?&quot;horizontal&quot;:&quot;vertical&quot;;this.waypoints[e][t.key]=t,this.refresh()},e.prototype.checkEmpty=function(){var t=this.Adapter.isEmptyObject(this.waypoints.horizontal),e=this.Adapter.isEmptyObject(this.waypoints.vertical),i=this.element==this.element.window;t&amp;&amp;e&amp;&amp;!i&amp;&amp;(this.adapter.off(&quot;.waypoints&quot;),delete o[this.key])},e.prototype.createThrottledResizeHandler=function(){function t(){e.handleResize(),e.didResize=!1}var e=this;this.adapter.on(&quot;resize.waypoints&quot;,function(){e.didResize||(e.didResize=!0,n.requestAnimationFrame(t))})},e.prototype.createThrottledScrollHandler=function(){function t(){e.handleScroll(),e.didScroll=!1}var e=this;this.adapter.on(&quot;scroll.waypoints&quot;,function(){(!e.didScroll||n.isTouch)&amp;&amp;(e.didScroll=!0,n.requestAnimationFrame(t))})},e.prototype.handleResize=function(){n.Context.refreshAll()},e.prototype.handleScroll=function(){var t={},e={horizontal:{newScroll:this.adapter.scrollLeft(),oldScroll:this.oldScroll.x,forward:&quot;right&quot;,backward:&quot;left&quot;},vertical:{newScroll:this.adapter.scrollTop(),oldScroll:this.oldScroll.y,forward:&quot;down&quot;,backward:&quot;up&quot;}};for(var i in e){var o=e[i],n=o.newScroll&gt;o.oldScroll,r=n?o.forward:o.backward;for(var s in this.waypoints[i]){var a=this.waypoints[i][s];if(null!==a.triggerPoint){var l=o.oldScroll&lt;a.triggerPoint,h=o.newScroll&gt;=a.triggerPoint,p=l&amp;&amp;h,u=!l&amp;&amp;!h;(p||u)&amp;&amp;(a.queueTrigger(r),t[a.group.id]=a.group)}}}for(var c in t)t[c].flushTriggers();this.oldScroll={x:e.horizontal.newScroll,y:e.vertical.newScroll}},e.prototype.innerHeight=function(){return this.element==this.element.window?n.viewportHeight():this.adapter.innerHeight()},e.prototype.remove=function(t){delete this.waypoints[t.axis][t.key],this.checkEmpty()},e.prototype.innerWidth=function(){return this.element==this.element.window?n.viewportWidth():this.adapter.innerWidth()},e.prototype.destroy=function(){var t=[];for(var e in this.waypoints)for(var i in this.waypoints[e])t.push(this.waypoints[e][i]);for(var o=0,n=t.length;n&gt;o;o++)t[o].destroy()},e.prototype.refresh=function(){var t,e=this.element==this.element.window,i=e?void 0:this.adapter.offset(),o={};this.handleScroll(),t={horizontal:{contextOffset:e?0:i.left,contextScroll:e?0:this.oldScroll.x,contextDimension:this.innerWidth(),oldScroll:this.oldScroll.x,forward:&quot;right&quot;,backward:&quot;left&quot;,offsetProp:&quot;left&quot;},vertical:{contextOffset:e?0:i.top,contextScroll:e?0:this.oldScroll.y,contextDimension:this.innerHeight(),oldScroll:this.oldScroll.y,forward:&quot;down&quot;,backward:&quot;up&quot;,offsetProp:&quot;top&quot;}};for(var r in t){var s=t[r];for(var a in this.waypoints[r]){var l,h,p,u,c,d=this.waypoints[r][a],f=d.options.offset,w=d.triggerPoint,y=0,g=null==w;d.element!==d.element.window&amp;&amp;(y=d.adapter.offset()[s.offsetProp]),&quot;function&quot;==typeof f?f=f.apply(d):&quot;string&quot;==typeof f&amp;&amp;(f=parseFloat(f),d.options.offset.indexOf(&quot;%&quot;)&gt;-1&amp;&amp;(f=Math.ceil(s.contextDimension*f/100))),l=s.contextScroll-s.contextOffset,d.triggerPoint=Math.floor(y+l-f),h=w&lt;s.oldScroll,p=d.triggerPoint&gt;=s.oldScroll,u=h&amp;&amp;p,c=!h&amp;&amp;!p,!g&amp;&amp;u?(d.queueTrigger(s.backward),o[d.group.id]=d.group):!g&amp;&amp;c?(d.queueTrigger(s.forward),o[d.group.id]=d.group):g&amp;&amp;s.oldScroll&gt;=d.triggerPoint&amp;&amp;(d.queueTrigger(s.forward),o[d.group.id]=d.group)}}return n.requestAnimationFrame(function(){for(var t in o)o[t].flushTriggers()}),this},e.findOrCreateByElement=function(t){return e.findByElement(t)||new e(t)},e.refreshAll=function(){for(var t in o)o[t].refresh()},e.findByElement=function(t){return o[t.waypointContextKey]},window.onload=function(){r&amp;&amp;r(),e.refreshAll()},n.requestAnimationFrame=function(e){var i=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||t;i.call(window,e)},n.Context=e}(),function(){&quot;use strict&quot;;function t(t,e){return t.triggerPoint-e.triggerPoint}function e(t,e){return e.triggerPoint-t.triggerPoint}function i(t){this.name=t.name,this.axis=t.axis,this.id=this.name+&quot;-&quot;+this.axis,this.waypoints=[],this.clearTriggerQueues(),o[this.axis][this.name]=this}var o={vertical:{},horizontal:{}},n=window.Waypoint;i.prototype.add=function(t){this.waypoints.push(t)},i.prototype.clearTriggerQueues=function(){this.triggerQueues={up:[],down:[],left:[],right:[]}},i.prototype.flushTriggers=function(){for(var i in this.triggerQueues){var o=this.triggerQueues[i],n=&quot;up&quot;===i||&quot;left&quot;===i;o.sort(n?e:t);for(var r=0,s=o.length;s&gt;r;r+=1){var a=o[r];(a.options.continuous||r===o.length-1)&amp;&amp;a.trigger([i])}}this.clearTriggerQueues()},i.prototype.next=function(e){this.waypoints.sort(t);var i=n.Adapter.inArray(e,this.waypoints),o=i===this.waypoints.length-1;return o?null:this.waypoints[i+1]},i.prototype.previous=function(e){this.waypoints.sort(t);var i=n.Adapter.inArray(e,this.waypoints);return i?this.waypoints[i-1]:null},i.prototype.queueTrigger=function(t,e){this.triggerQueues[e].push(t)},i.prototype.remove=function(t){var e=n.Adapter.inArray(t,this.waypoints);e&gt;-1&amp;&amp;this.waypoints.splice(e,1)},i.prototype.first=function(){return this.waypoints[0]},i.prototype.last=function(){return this.waypoints[this.waypoints.length-1]},i.findOrCreate=function(t){return o[t.axis][t.name]||new i(t)},n.Group=i}(),function(){&quot;use strict&quot;;function t(t){this.$element=e(t)}var e=window.jQuery,i=window.Waypoint;e.each([&quot;innerHeight&quot;,&quot;innerWidth&quot;,&quot;off&quot;,&quot;offset&quot;,&quot;on&quot;,&quot;outerHeight&quot;,&quot;outerWidth&quot;,&quot;scrollLeft&quot;,&quot;scrollTop&quot;],function(e,i){t.prototype[i]=function(){var t=Array.prototype.slice.call(arguments);return this.$element[i].apply(this.$element,t)}}),e.each([&quot;extend&quot;,&quot;inArray&quot;,&quot;isEmptyObject&quot;],function(i,o){t[o]=e[o]}),i.adapters.push({name:&quot;jquery&quot;,Adapter:t}),i.Adapter=t}(),function(){&quot;use strict&quot;;function t(t){return function(){var i=[],o=arguments[0];return t.isFunction(arguments[0])&amp;&amp;(o=t.extend({},arguments[1]),o.handler=arguments[0]),this.each(function(){var n=t.extend({},o,{element:this});&quot;string&quot;==typeof n.context&amp;&amp;(n.context=t(this).closest(n.context)[0]),i.push(new e(n))}),i}}var e=window.Waypoint;window.jQuery&amp;&amp;(window.jQuery.fn.waypoint=t(window.jQuery)),window.Zepto&amp;&amp;(window.Zepto.fn.waypoint=t(window.Zepto))}();</textarea><br>
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