(function ($) {
$(window).ready(function() {
  var bgArray = ['Zihao_Simon.jpg','Slate.jpg','Zanoli_Alcatraz_02.JPG','Flower_01.jpg', 'Zanoli_Alcatraz_01.JPG'];
  var bg = bgArray[Math.floor(Math.random() * bgArray.length)];
  var path = 'sites/default/files/images/';
  var imageUrl = path + bg;
  $('.lead-block').css({
   'background-image' : 'url(' + imageUrl +')'
});
/* $( '.lead-block' ).prepend( '<span class="sr-only sr-only-focusable">Image: Photo of Cinema student at work</span>' ); */
});
})(jQuery);