(function(document,window,index){"use strict";var paraxify;paraxify=function(el,options){var Paraxify,contador,i,opt,pho,posY,screenY;posY=0;screenY=0;i=0;opt={};pho=[];contador=0;Paraxify=function(el,options){this.options={speed:1,boost:0};for(i in options){this.options[i]=options[i];}
if(this.options.speed<0||this.options.speed>1){this.options.speed=1;}
if(!el){el='paraxify';}
if(document.getElementsByClassName(el.replace('.',''))){this.photos=document.getElementsByClassName(el.replace('.',''));}else if(document.querySelector(el)!==false){this.photos=querySelector(el);}else{throw new Error("The elements you're trying to select don't exist.");}
opt=this.options;pho=this.photos;this._init(this);};Paraxify.prototype={update:function(){screenY=window.innerHeight;i=0;while(i<pho.length){pho[i].style.backgroundPosition="center center";pho[i].url=window.getComputedStyle(pho[i],false).backgroundImage.replace(/url\((['"])?(.*?)\1\)/gi,'$2').split(',')[0];if(!pho[i].img){pho[i].img=new Image();}
if(pho[i].url!==pho[i].img.src){this._check(i);pho[i].img.src=pho[i].url;}
i++;}
this._animate();},_init:function(){this.update();window.onscroll=(function(){this._animate();}).bind(this);window.onresize=(function(){this.update();}).bind(this);},_check:function(i){var actualHeight,main;main=pho[i];main.ok=true;main.bgSize=window.getComputedStyle(main,false).backgroundSize;actualHeight=screenY;pho[i].img.onload=function(){if(main.bgSize===''||main.bgSize==='auto'){if(this.height<main.offsetHeight){main.ok=false;throw new Error("The image "+main.url+" ("+this.height+"px) is too short for that container ("+main.offsetHeight+"px).");}else{actualHeight=this.height;if(this.height<screenY){actualHeight=actualHeight+((screenY-main.offsetHeight)*opt.speed);}}}else if(main.bgSize==='cover'){if(screenY<main.offsetHeight){main.ok=false;throw new Error("The container ("+main.offsetHeight+"px) can't be bigger than the image ("+screenY+"px).");}}else{window.getComputedStyle(main,false).backgroundSize==='cover';this._check(i);}
main.diff=-(actualHeight-main.offsetHeight)*opt.speed;main.diff=main.diff-(main.offsetHeight*opt.boost);};},_visible:function(i){if(((posY+screenY)>pho[i].offsetTop)&&(posY<pho[i].offsetTop+pho[i].offsetHeight)){return true;}
return false;},_animate:function(){var per,position;if(window.pageYOffset!==void 0){posY=window.pageYOffset;}else{posY=(document.documentElement||document.body.parentNode||document.body).scrollTop;}
i=0;while(i<pho.length){this._check(i);if(pho[i].ok&&window.getComputedStyle(pho[i],false).backgroundAttachment==="fixed"&&this._visible(i)){per=(posY-pho[i].offsetTop+screenY)/(pho[i].offsetHeight+screenY);position=pho[i].diff*(per-0.5);if(pho[i].bgSize!=='cover'){position=position+((screenY-pho[i].img.height)/2);}
position=Math.round(position*100)/100;}else{position="center";}
pho[i].style.backgroundPosition="center "+position+"px";i++;}}};return new Paraxify(el,options);};window.paraxify=paraxify;})(document,window,0);