/*!
 *  Echo v1.2.0
 *  Lazy-loading images with data-* attributes
 *  Project: https://github.com/toddmotto/echo
 *  by Todd Motto: http://toddmotto.com
 *  Copyright. MIT licensed.
 */
window.Echo=function(a,b){"use strict";var c,d=function(c){var d=c.getBoundingClientRect();return(d.top>=0&&d.left>=0&&d.top)<=(a.innerHeight||b.documentElement.clientHeight)},e=function(){for(var a=0;a<c.length;a++){var b=c[a];d(b)&&(b.src=b.getAttribute("data-echo"),[].indexOf&&-1!==c.indexOf(b)&&c.splice(a,1))}},f=function(){c=b.querySelectorAll("[data-echo]"),e(),a.onscroll=e};return{init:f}}(window,document);