// create an array with four images
// set a variable with the array call type as part of its name

var imageURLs = ["../dotAsset/25391","../dotAsset/25393","../dotAsset/25395","../dotAsset/25397"];

function getImageTag() {

// this function creates the array with an image tag around the name &
// randomizes the event using the math function

    var img = '<img src=\"';
    var randomIndex = Math.floor(Math.random() * imageURLs.length);
    img += imageURLs[randomIndex];
    img += '\" alt=\"Some alt text\"/>';
    return img;
  }