$(document).ready(function(){
   homepagerandomimage();
});

function homepagerandomimage() {
   $('body#home').find('div#hero').each(function() {
   $(this).children('img').hide();
      var imgArray = ['/images/heroes/homepage1.jpg', '/images/heroes/homepage3.jpg', '/images/heroes/homepage4.jpg', '/images/heroes/homepage5.jpg'];
      function ranNum(){ return Math.floor(Math.random()*imgArray.length); }
      var ranNum = ranNum();
      var toappend = imgArray[ranNum]
      $(this).children('img').attr({'src': toappend}).show();
   }); //each
} //homepagerandomimage