diff --git a/static/js/webslides.js b/static/js/webslides.js
index 6a61439..0a46daa 100644
--- a/static/js/webslides.js
+++ b/static/js/webslides.js
@@ -1418,11 +1418,12 @@ var Scroll = function () {
           wheelDeltaX = event.deltaX;
 
       var isVertical = this.ws_.isVertical;
+      var isHorizontalMovement = Math.abs(wheelDeltaX) > Math.abs(wheelDeltaY);
       this.isGoingUp_ = wheelDeltaY < 0;
       this.isGoingLeft_ = wheelDeltaX < 0;
 
       // If we're mainly moving horizontally, prevent default
-      if (Math.abs(wheelDeltaX) > Math.abs(wheelDeltaY)) {
+      if (isHorizontalMovement) {
         if (!isVertical) {
           event.preventDefault();
         } else {
@@ -1433,7 +1434,7 @@ var Scroll = function () {
       }
 
       if (Math.abs(wheelDeltaY) >= MIN_WHEEL_DELTA || Math.abs(wheelDeltaX) >= MIN_WHEEL_DELTA) {
-        if (isVertical && this.isGoingUp_ || !isVertical && this.isGoingLeft_) {
+        if (isHorizontalMovement && this.isGoingLeft_ || !isHorizontalMovement && this.isGoingUp_) {
           this.ws_.goPrev();
         } else {
           this.ws_.goNext();
diff --git a/static/js/webslides.min.js b/static/js/webslides.min.js
index 6b819e9..46766d3 100644
--- a/static/js/webslides.min.js
+++ b/static/js/webslides.min.js
@@ -1 +1 @@
-!function(e){function t(i){if(n[i])return n[i].exports;var r=n[i]={i:i,l:!1,exports:{}};return e[i].call(r.exports,r,r.exports,t),r.l=!0,r.exports}var n={};return t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,n,i){t.o(e,n)||Object.defineProperty(e,n,{configurable:!1,enumerable:!0,get:i})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="/static/js/",t(t.s=16)}([function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(13),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o=function(){function e(){i(this,e)}return a(e,null,[{key:"createNode",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:"",i=document.createElement(e);return i.id=t,n&&(i.textContent=n),i}},{key:"hide",value:function(e){e.style.display="none"}},{key:"show",value:function(e){e.style.display=""}},{key:"fireEvent",value:function(e,t){var n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},i=new r.a(t,{detail:n});e.dispatchEvent(i)}},{key:"toArray",value:function(e){return[].slice.call(e)}}]),e}();t.a=o},function(e,t,n){"use strict";var i={ENTER:13,SPACE:32,LEFT:37,UP:38,RIGHT:39,DOWN:40};t.a=i},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),a=window.navigator.userAgent,o=function(){function e(){i(this,e)}return r(e,null,[{key:"isAndroid",value:function(){return!!a.match(/Android/i)}},{key:"isBlackBerry",value:function(){return!!a.match(/BlackBerry/i)}},{key:"isiOS",value:function(){return!!a.match(/iPhone/i)}},{key:"isOpera",value:function(){return!!a.match(/Opera Mini/i)}},{key:"isWindows",value:function(){return!!a.match(/IEMobile/i)}},{key:"isWindowsPhone",value:function(){return!!a.match(/Windows Phone/i)}},{key:"isAny",value:function(){return e.isAndroid()||e.isBlackBerry()||e.isiOS()||e.isOpera()||e.isWindows()||e.isWindowsPhone()}}]),e}();t.a=o},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(10),a=n(4),o=n(0),s=n(15),u=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),l={VERTICAL:"vertical"},c={clickNav:r.a.ClickNav,grid:r.a.Grid,hash:r.a.Hash,keyboard:r.a.Keyboard,nav:r.a.Navigation,scroll:r.a.Scroll,touch:r.a.Touch},h=function(){function e(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.autoslide,r=void 0!==n&&n,a=t.changeOnClick,o=void 0!==a&&a;if(i(this,e),this.el=document.getElementById("webslides"),this.isMoving=!1,this.slides=null,this.currentSlideI_=-1,this.currentSlide_=null,this.maxSlide_=0,this.isVertical=this.el.classList.contains(l.VERTICAL),this.plugins={},this.interval_=null,this.autoslide_=r,this.changeOnClick_=o,!this.el)throw new Error("Couldn't find the webslides container!");this.removeChildren_(),this.grabSlides_(),this.createPlugins_(),this.initSlides_(),this.play(),this.onInit_()}return u(e,[{key:"removeChildren_",value:function(){for(var e=this.el.childNodes,t=e.length;t--;){var n=e[t];a.a.isCandidate(n)||this.el.removeChild(n)}}},{key:"createPlugins_",value:function(){var e=this;Object.keys(c).forEach(function(t){var n=c[t];e.plugins[t]=new n(e)})}},{key:"onInit_",value:function(){o.a.fireEvent(this.el,"ws:init")}},{key:"grabSlides_",value:function(){this.slides=o.a.toArray(this.el.childNodes).map(function(e,t){return new a.a(e,t)}),this.maxSlide_=this.slides.length}},{key:"goToSlide",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null;if(this.isValidIndexSlide_(e)&&!this.isMoving){this.isMoving=!0;var n=!1;null!==t?n=t:this.currentSlideI_>=0&&(n=e>this.currentSlideI_);var i=this.slides[e];null===this.currentSlide_||!this.isVertical||this.plugins.touch&&this.plugins.touch.isEnabled?this.transitionToSlide_(n,i,this.onSlideChange_):this.scrollTransitionToSlide_(n,i,this.onSlideChange_)}}},{key:"scrollTransitionToSlide_",value:function(e,t,i){var r=this;this.el.style.overflow="none",e?t.show():(t.moveBeforeFirst(),t.show(),n.i(s.a)(this.currentSlide_.el.offsetTop,0)),n.i(s.a)(t.el.offsetTop,500,function(){r.currentSlide_.hide(),e&&r.currentSlide_.moveAfterLast(),r.el.style.overflow="auto",setTimeout(function(){i.call(r,t)},150)})}},{key:"transitionToSlide_",value:function(e,t,i){n.i(s.a)(0,0),e||t.moveBeforeFirst(),this.currentSlide_&&(e&&this.currentSlide_.moveAfterLast(),this.currentSlide_.hide()),t.show(),i.call(this,t)}},{key:"onSlideChange_",value:function(e){this.currentSlide_=e,this.currentSlideI_=e.i,this.isMoving=!1,o.a.fireEvent(this.el,"ws:slide-change",{slides:this.maxSlide_,currentSlide0:this.currentSlideI_,currentSlide:this.currentSlideI_+1})}},{key:"goNext",value:function(){var e=this.currentSlideI_+1;e>=this.maxSlide_&&(e=0),this.goToSlide(e,!0)}},{key:"goPrev",value:function(){var e=this.currentSlideI_-1;e<0&&(e=this.maxSlide_-1),this.goToSlide(e,!1)}},{key:"isValidIndexSlide_",value:function(e){return e>=0&&e<this.maxSlide_}},{key:"initSlides_",value:function(){var e=this.plugins.hash.constructor.getSlideNumber();if((null===e||e>=this.maxSlide_)&&(e=0),0!==e)for(var t=0;t<e;)this.slides[t].moveAfterLast(),t++;this.goToSlide(e)}},{key:"play",value:function(e){e=e||this.autoslide_,!this.interval_&&"number"==typeof e&&e>0&&(this.interval_=setInterval(this.goNext.bind(this),e))}},{key:"stop",value:function(){this.interval_&&(clearInterval(this.interval_),this.interval_=null)}}],[{key:"registerPlugin",value:function(e,t){c[e]=t}}]),e}();t.a=h},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(0),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o={SLIDE:"slide",CURRENT:"current"},s=function(){function e(t,n){i(this,e),this.el=t,this.parent=t.parentNode,this.i=n,this.el.id="section-"+(n+1),this.el.classList.add(o.SLIDE),this.hide()}return a(e,[{key:"hide",value:function(){r.a.hide(this.el),this.el.classList.remove(o.CURRENT)}},{key:"show",value:function(){r.a.show(this.el),this.el.classList.add(o.CURRENT)}},{key:"moveAfterLast",value:function(){var e=this.parent.childNodes[this.parent.childElementCount-1];this.parent.insertBefore(this.el,e.nextSibling)}},{key:"moveBeforeFirst",value:function(){var e=this.parent.childNodes[0];this.parent.insertBefore(this.el,e)}}],[{key:"isCandidate",value:function(e){return 1===e.nodeType&&"SECTION"===e.tagName}}]),e}();t.a=s},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),a=["INPUT","SELECT","OPTION","BUTTON","A","TEXTAREA"],o=function(){function e(t){i(this,e),this.ws_=t,t.changeOnClick_&&this.ws_.el.addEventListener("click",this.onClick_.bind(this))}return r(e,[{key:"onClick_",value:function(e){a.indexOf(e.target.tagName)<0&&"undefined"==typeof e.target.dataset.preventNav&&this.ws_.goNext()}}]),e}();t.a=o},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(1),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o=function(){function e(t){i(this,e),this.ws_=t;var n="body.baseline {\n                  background: url(../images/baseline.png) left top .8rem/.8rem;\n                }",r=document.head||document.getElementsByTagName("head")[0],a=document.createElement("style");a.type="text/css",a.styleSheet?a.styleSheet.cssText=n:a.appendChild(document.createTextNode(n)),r.appendChild(a),document.addEventListener("keydown",this.onKeyPress_.bind(this),!1)}return a(e,[{key:"onKeyPress_",value:function(e){e.which===r.a.ENTER&&document.body.toggleClass("baseline")}}]),e}();t.a=o},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),a="#slide",o=/#slide=(\d+)/,s=function(){function e(t){i(this,e),this.ws_=t,t.el.addEventListener("ws:slide-change",e.onSlideChange_),window.addEventListener("hashchange",this.onHashChange_.bind(this),!1)}return r(e,[{key:"onHashChange_",value:function(){var t=e.getSlideNumber();null!==t&&this.ws_.goToSlide(t)}}],[{key:"onSlideChange_",value:function(t){e.setSlideNumber(t.detail.currentSlide)}},{key:"getSlideNumber",value:function(){var e=document.location.hash.match(o),t=0;return Array.isArray(e)&&(t=parseInt(e[1],10)),"number"!=typeof t||t<0||!Array.isArray(e)?t=null:t--,t}},{key:"setSlideNumber",value:function(t){e.getSlideNumber()!==t-1&&history.pushState({slideI:t-1},"Slide "+t,a+"="+t)}}]),e}();t.a=s},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(1),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o=function(){function e(t){i(this,e),this.ws_=t,document.addEventListener("keydown",this.onKeyPress_.bind(this),!1)}return a(e,[{key:"onKeyPress_",value:function(e){var t=void 0;e.which===r.a.SPACE?t=this.ws_.goNext:this.ws_.isVertical?e.which===r.a.DOWN?t=this.ws_.goNext:e.which===r.a.UP&&(t=this.ws_.goPrev):e.which===r.a.RIGHT?t=this.ws_.goNext:e.which===r.a.LEFT&&(t=this.ws_.goPrev),t&&t.call(this.ws_)}}]),e}();t.a=o},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(0),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o={NAV:"navigation",NEXT:"next",PREV:"previous",COUNTER:"counter"},s={VERTICAL:{NEXT:"↓",PREV:"↑"},HORIZONTAL:{NEXT:"→",PREV:"←"}},u=function(){function e(t){i(this,e);var n=t.isVertical?s.VERTICAL:s.HORIZONTAL;this.el=r.a.createNode("div","navigation"),this.next=e.createArrow(o.NEXT,n.NEXT),this.prev=e.createArrow(o.PREV,n.PREV),this.counter=r.a.createNode("span",o.COUNTER),this.ws_=t,this.el.appendChild(this.next),this.el.appendChild(this.prev),this.el.appendChild(this.counter),this.ws_.el.appendChild(this.el),this.bindEvents_()}return a(e,[{key:"bindEvents_",value:function(){this.ws_.el.addEventListener("ws:slide-change",this.onSlideChanged_.bind(this)),this.next.addEventListener("click",this.onButtonClicked_.bind(this)),this.prev.addEventListener("click",this.onButtonClicked_.bind(this))}},{key:"updateCounter",value:function(e,t){this.counter.textContent=e+" / "+t}},{key:"onSlideChanged_",value:function(e){this.updateCounter(e.detail.currentSlide,e.detail.slides)}},{key:"onButtonClicked_",value:function(e){e.preventDefault(),e.target===this.next?this.ws_.goNext():this.ws_.goPrev()}}],[{key:"createArrow",value:function(e,t){var n=r.a.createNode("a",e,t);return n.href="#",n.title="Arrow Keys",n}}]),e}();t.a=u},function(e,t,n){"use strict";var i=n(5),r=n(6),a=n(7),o=n(8),s=n(9),u=n(11),l=n(12);t.a={ClickNav:i.a,Grid:r.a,Hash:a.a,Keyboard:o.a,Navigation:s.a,Scroll:u.a,Touch:l.a}},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(2),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o=40,s=function(){function e(t){i(this,e),this.ws_=t,this.scrollContainer_=t.el,this.isGoingUp_=!1,this.isGoingLeft_=!1,this.timeout_=null,r.a.isAny()||(this.scrollContainer_.addEventListener("wheel",this.onMouseWheel_.bind(this)),t.isVertical||t.el.addEventListener("ws:slide-change",this.onSlideChange_.bind(this)))}return a(e,[{key:"onSlideChange_",value:function(){var e=this;this.timeout_=setTimeout(function(){e.timeout_=null},450)}},{key:"onMouseWheel_",value:function(e){if(this.ws_.isMoving||this.timeout_)return void e.preventDefault();var t=e.deltaY,n=e.deltaX,i=this.ws_.isVertical;if(this.isGoingUp_=t<0,this.isGoingLeft_=n<0,Math.abs(n)>Math.abs(t)){if(i)return;e.preventDefault()}(Math.abs(t)>=o||Math.abs(n)>=o)&&(i&&this.isGoingUp_||!i&&this.isGoingLeft_?this.ws_.goPrev():this.ws_.goNext(),e.preventDefault())}}]),e}();t.a=s},function(e,t,n){"use strict";function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var r=n(2),a=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o={touch:{START:"touchstart",MOVE:"touchmove",END:"touchend"},pointer:{START:"pointerdown",MOVE:"pointermove",END:"pointerup"}},s=50,u=function(){function e(t){i(this,e),this.ws_=t,this.startX_=0,this.startY_=0,this.endX_=0,this.endY_=0,this.isEnabled=!1;var n=void 0;r.a.isAny()&&(n=window.PointerEvent&&(r.a.isWindows()||r.a.isWindowsPhone())?o.pointer:o.touch,this.isEnabled=!0,document.addEventListener(n.START,this.onStart_.bind(this),!1),document.addEventListener(n.MOVE,this.onMove_.bind(this),!1),document.addEventListener(n.MOVE,this.onMove_.bind(this),!1),document.addEventListener(n.END,this.onStop_.bind(this),!1))}return a(e,[{key:"onStart_",value:function(t){var n=e.normalizeEventInfo(t);this.startX_=n.x,this.startY_=n.y,this.endX_=n.x,this.endY_=n.y}},{key:"onMove_",value:function(t){var n=e.normalizeEventInfo(t);this.endX_=n.x,this.endY_=n.y}},{key:"onStop_",value:function(){var e=this.startX_-this.endX_,t=this.startY_-this.endY_;Math.abs(e)>Math.abs(t)&&(e<-s?this.ws_.goPrev():e>s&&this.ws_.goNext())}}],[{key:"normalizeEventInfo",value:function(e){var t=void 0,n=void 0,i={pageX:0,pageY:0};return"undefined"!=typeof e.changedTouches?i=e.changedTouches[0]:"undefined"!=typeof e.originalEvent&&"undefined"!=typeof e.originalEvent.changedTouches&&(i=e.originalEvent.changedTouches[0]),t=e.offsetX||e.layerX||i.pageX,n=e.offsetY||e.layerY||i.pageY,{x:t,y:n}}}]),e}();t.a=u},function(e,t,n){"use strict";function i(){try{var e=new r("t",{detail:{a:"b"}});return"t"===e.type&&"b"===e.detail.a}catch(e){}return!1}var r=window.CustomEvent,a=function(e,t){var n=document.createEvent("CustomEvent");return t?n.initCustomEvent(e,t.bubbles,t.cancelable,t.detail):n.initCustomEvent(e,!1,!1,void 0),n},o=i()?r:a;t.a=o},function(e,t,n){"use strict";function i(e){return.5-Math.cos(e*Math.PI)/2}function r(e){return e}t.a={swing:i,linear:r}},function(e,t,n){"use strict";function i(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:500,n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:function(){},i=e-a.scrollTop,o=a.scrollTop,s=16;if(!t)return a.scrollTop=e,void n();var u=function u(l){l+=s;var c=Math.min(1,l/t),h=r.a.swing(c,l*c,e,i,t);a.scrollTop=Math.floor(o+h*i),l<t?setTimeout(function(){return u(l)},s):n()};u(0)}var r=n(14);t.a=i;var a=document.getElementById("webslides")},function(e,t,n){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=n(3);window.WebSlides=i.a}]);
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