Fallback for lazysizes on IE8

lazysizes.ie8.js

window.ready=function(e){"loading"!=document.readyState?e():document.addEventListener?document.addEventListener("DOMContentLoaded",e):document.attachEvent("onreadystatechange",function(){"loading"!=document.readyState&&e()})};

/* Fallback for lazysizes on IE8 */
window.ready(function(){
  if (document.documentMode == 8) {
    var elms = document.querySelectorAll('.lazyload');
    for(var i=0; i<elms.length; i++){
      elms[i].setAttribute('class', String(elms[i].getAttribute('class')).replace(/\s*lazyload\s*/g, ' lazyloaded '));
      if(elms[i].getAttribute('data-src')){
        elms[i].setAttribute('src', elms[i].getAttribute('data-src'));
      }
    }
  } 
});