https://iff.org/wp-content/themes/IFFTheme2023-NewColors/scripts/util.js

1function Util(){};Util.hasClass=function(el,className){if(el.classList)return el.classList.contains(className);else return!!el.className.match(new RegExp('(\\s|^)'+className+'(\\s|$)'));};Util.addClass=function(el,className){var classList=className.split(' ');if(el.classList)el.classList.add(classList[0]);else if(!Util.hasClass(el,classList[0]))el.className+=" "+classList[0];if(classList.length>1)Util.addClass(el,classList.slice(1).join(' '));};Util.removeClass=function(el,className){var classList=className.split(' ');if(el.classList)el.classList.remove(classList[0]);else if(Util.hasClass(el,classList[0])){var reg=new RegExp('(\\s|^)'+classList[0]+'(\\s|$)');el.className=el.className.replace(reg,' ');}
2if(classList.length>1)Util.removeClass(el,classList.slice(1).join(' '));};Util.toggleClass=function(el,className,bool){if(bool)Util.addClass(el,className);else Util.removeClass(el,className);};Util.setAttributes=function(el,attrs){for(var key in attrs){el.setAttribute(key,attrs[key]);}};Util.getChildrenByClassName=function(el,className){var children=el.children,childrenByClass=[];for(var i=0;i<el.children.length;i++){if(Util.hasClass(el.children[i],className))childrenByClass.push(el.children[i]);}
3return childrenByClass;};Util.setHeight=function(start,to,element,duration,cb){var change=to-start,currentTime=null;var animateHeight=function(timestamp){if(!currentTime)currentTime=timestamp;var progress=timestamp-currentTime;var val=parseInt((progress/duration)*change+start);element.setAttribute("style","height:"+val+"px;");if(progress<duration){window.requestAnimationFrame(animateHeight);}else{cb();}};element.setAttribute("style","height:"+start+"px;");window.requestAnimationFrame(animateHeight);};Util.scrollTo=function(final,duration,cb){var start=window.scrollY||document.documentElement.scrollTop,currentTime=null;var animateScroll=function(timestamp){if(!currentTime)currentTime=timestamp;var progress=timestamp-currentTime;if(progress>duration)progress=duration;var val=Math.easeInOutQuad(progress,start,final-start,duration);window.scrollTo(0,val);if(progress<duration){window.requestAnimationFrame(animateScroll);}else{cb&&cb();}};window.requestAnimationFrame(animateScroll);};Util.moveFocus=function(element){if(!element)element=document.getElementsByTagName("body")[0];element.focus();if(document.activeElement!==element){element.setAttribute('tabindex','-1');element.focus();}};Util.getIndexInArray=function(array,el){return Array.prototype.indexOf.call(array,el);};Util.cssSupports=function(property,value){if('CSS'in window){return CSS.supports(property,value);}else{var jsProperty=property.replace(/-([a-z])/g,function(g){return g[1].toUpperCase();});return jsProperty in document.body.style;}};if(!Element.prototype.matches){Element.prototype.matches=Element.prototype.msMatchesSelector||Element.prototype.webkitMatchesSelector;}
4if(!Element.prototype.closest){Element.prototype.closest=function(s){var el=this;if(!document.documentElement.contains(el))return null;do{if(el.matches(s))return el;el=el.parentElement||el.parentNode;}while(el!==null&&el.nodeType===1);return null;};}
5if(typeof window.CustomEvent!=="function"){function CustomEvent(event,params){params=params||{bubbles:false,cancelable:false,detail:undefined};var evt=document.createEvent('CustomEvent');evt.initCustomEvent(event,params.bubbles,params.cancelable,params.detail);return evt;}
6CustomEvent.prototype=window.Event.prototype;window.CustomEvent=CustomEvent;}
7Math.easeInOutQuad=function(t,b,c,d){t/=d/2;if(t<1)return c/2*t*t+b;t--;return-c/2*(t*(t-2)-1)+b;};