$(function() {

  var a = ["https://i.imgbox.com/EZpQZuNZ.png", "https://i.imgbox.com/NyBSdkvQ.png", "https://i.imgbox.com/skBLsbSC.png"];

  $("#pun-logo img,#i_logo,#logo img").attr("src", a[Math.floor(Math.random() * a.length)])

});