/* Written by Erik Terwan - MIT license - https://github.com/terwanerik */
!function(t,e){"function"==typeof define&&define.amd?define([],e):"object"==typeof module&&module.exports?module.exports=e():t.ScrollTrigger=e()}(this,function(){"use strict";return function(t,e,n){function i(){var t=h.bindElement.scrollTop?h.bindElement.scrollTop:document.documentElement.scrollTop,e=h.bindElement.scrollLeft?h.bindElement.scrollLeft:document.documentElement.scrollLeft;a.left==e&&a.top==t||h.scrollDidChange(),r.length>0||c.length>0?(u=!0,d(i)):u=!1}function l(t,e){var n=e.split("("),i=n[0];if(n.length>1?(n=n[1].split(")")[0],n=n.indexOf("', '")>-1?n.split("', '"):n.indexOf("','")>-1?n.split("','"):n.indexOf('", "')>-1?n.split('", "'):n.indexOf('","')>-1?n.split('","'):[n]):n=[],n=n.map(function(t){return s(t)}),"function"==typeof h.callScope[i])try{h.callScope[i].apply(t.element,n)}catch(l){try{h.callScope[i].apply(null,n)}catch(l){}}}function s(t){return t+="",'"'==t[0]&&(t=t.substr(1)),"'"==t[0]&&(t=t.substr(1)),'"'==t[t.length-1]&&(t=t.substr(0,t.length-1)),"'"==t[t.length-1]&&(t=t.substr(0,t.length-1)),t}var o=function(t,e){this.element=e,this.defaultOptions=t,this.showCallback=null,this.hideCallback=null,this.visibleClass="visible",this.hiddenClass="invisible",this.addWidth=!1,this.addHeight=!1,this.once=!1;var n=0,i=0;this.left=function(t){return function(){return t.element.getBoundingClientRect().left}}(this),this.top=function(t){return function(){return t.element.getBoundingClientRect().top}}(this),this.xOffset=function(t){return function(e){var i=n;return t.addWidth&&!e?i+=t.width():e&&!t.addWidth&&(i-=t.width()),i}}(this),this.yOffset=function(t){return function(e){var n=i;return t.addHeight&&!e?n+=t.height():e&&!t.addHeight&&(n-=t.height()),n}}(this),this.width=function(t){return function(){return t.element.offsetWidth}}(this),this.height=function(t){return function(){return t.element.offsetHeight}}(this),this.reset=function(t){return function(){t.removeClass(t.visibleClass),t.removeClass(t.hiddenClass)}}(this),this.addClass=function(t){var e=function(e,n){t.element.classList.contains(e)||(t.element.classList.add(e),"function"==typeof n&&n())},n=function(e,n){e=e.trim();var i=new RegExp("(?:^|\\s)"+e+"(?:(\\s\\w)|$)","ig"),l=t.element.className;i.test(l)||(t.element.className+=" "+e,"function"==typeof n&&n())};return t.element.classList?e:n}(this),this.removeClass=function(t){var e=function(e,n){t.element.classList.contains(e)&&(t.element.classList.remove(e),"function"==typeof n&&n())},n=function(e,n){e=e.trim();var i=new RegExp("(?:^|\\s)"+e+"(?:(\\s\\w)|$)","ig"),l=t.element.className;i.test(l)&&(t.element.className=l.replace(i,"$1").trim(),"function"==typeof n&&n())};return t.element.classList?e:n}(this),this.init=function(t){return function(){var e=t.defaultOptions,l=t.element.getAttribute("data-scroll");e&&(e.toggle&&e.toggle.visible&&(t.visibleClass=e.toggle.visible),e.toggle&&e.toggle.hidden&&(t.hiddenClass=e.toggle.hidden),e.showCallback&&(t.showCallback=e.showCallback),e.hideCallback&&(t.hideCallback=e.hideCallback),e.centerHorizontal===!0&&(n=t.element.offsetWidth/2),e.centerVertical===!0&&(i=t.element.offsetHeight/2),e.offset&&e.offset.x&&(n+=e.offset.x),e.offset&&e.offset.y&&(i+=e.offset.y),e.addWidth&&(t.addWidth=e.addWidth),e.addHeight&&(t.addHeight=e.addHeight),e.once&&(t.once=e.once));var s=l.indexOf("addWidth")>-1,o=l.indexOf("addHeight")>-1,r=l.indexOf("once")>-1;t.addWidth===!1&&s===!0&&(t.addWidth=s),t.addHeight===!1&&o===!0&&(t.addHeight=o),t.once===!1&&r===!0&&(t.once=r),t.showCallback=t.element.hasAttribute("data-scroll-showCallback")?t.element.getAttribute("data-scroll-showCallback"):t.showCallback,t.hideCallback=t.element.hasAttribute("data-scroll-hideCallback")?t.element.getAttribute("data-scroll-hideCallback"):t.hideCallback;var c=l.split("toggle(");if(c.length>1){var a=c[1].split(")")[0].split(",");String.prototype.trim||(String.prototype.trim=function(){return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,"")}),t.visibleClass=a[0].trim().replace(".",""),t.hiddenClass=a[1].trim().replace(".","")}l.indexOf("centerHorizontal")>-1&&(n=t.element.offsetWidth/2),l.indexOf("centerVertical")>-1&&(i=t.element.offsetHeight/2);var d=l.split("offset(");if(d.length>1){var u=d[1].split(")")[0].split(",");n+=parseInt(u[0].replace("px","")),i+=parseInt(u[1].replace("px",""))}return t}}(this)};this.scrollElement=window,this.bindElement=document.body,this.callScope=window;var r=[],c=[],a={left:-1,top:-1},d=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.msRequestAnimationFrame||window.oRequestAnimationFrame||function(t){setTimeout(t,1e3/60)},u=!1,f=function(t){return function(e,n,i){return void 0!=n&&null!=n?t.bindElement=n:t.bindElement=document.body,void 0!=i&&null!=i?t.scrollElement=i:t.scrollElement=window,t.bind(t.bindElement.querySelectorAll("[data-scroll]")),t}}(this);this.bind=function(e){return function(n){n instanceof HTMLElement&&(n=[n]);var l=[].slice.call(n);return l=l.map(function(e){var n=new o(t,e);return n.init()}),r=r.concat(l),r.length>0&&0==u?(u=!0,i()):u=!1,e}}(this),this.triggerFor=function(){return function(t){var e=null;return r.each(function(n){n.element==t&&(e=n)}),e}}(this),this.destroy=function(t){return function(e){return r.each(function(t,n){t.element==e&&r.splice(n,1)}),t}}(this),this.destroyAll=function(t){return function(){return r=[],t}}(this),this.reset=function(t){return function(e){var n=t.triggerFor(e);if(null!=n){n.reset();var i=r.indexOf(n);i>-1&&r.splice(i,1)}return t}}(this),this.resetAll=function(t){return function(){return r.each(function(t){t.reset()}),r=[],t}}(this),this.attach=function(t){return function(e){return c.push(e),u||(u=!0,i()),t}}(this),this.detach=function(t){return function(e){var n=c.indexOf(e);return n>-1&&c.splice(n,1),t}}(this);var h=this;return this.scrollDidChange=function(t){return function(){var e=t.scrollElement.innerWidth||t.scrollElement.offsetWidth,n=t.scrollElement.innerHeight||t.scrollElement.offsetHeight,i=t.bindElement.scrollTop?t.bindElement.scrollTop:document.documentElement.scrollTop,s=t.bindElement.scrollLeft?t.bindElement.scrollLeft:document.documentElement.scrollLeft,o=[];r.each(function(t){var r=t.left(),c=t.top();a.left>s?r-=t.xOffset(!0):a.left<s&&(r+=t.xOffset(!1)),a.top>i?c-=t.yOffset(!0):a.top<i&&(c+=t.yOffset(!1)),e>r&&r>=0&&n>c&&c>=0?(t.addClass(t.visibleClass,function(){t.showCallback&&l(t,t.showCallback)}),t.removeClass(t.hiddenClass),t.once&&o.push(t)):(t.addClass(t.hiddenClass),t.removeClass(t.visibleClass,function(){t.hideCallback&&l(t,t.hideCallback)}))}),c.each(function(l){l.call(t,s,i,e,n)}),o.each(function(t){var e=r.indexOf(t);e>-1&&r.splice(e,1)}),a.left=s,a.top=i}}(this),Array.prototype.each=function(t){for(var e=this.length,n=0;e>n;n++){var i=this[n];i&&t(i,n)}},f(t,e,n)}});