// rotate Images on refresh
var theImages = new Array()
theImages[0] = '../images/hero-1.jpg'
theImages[1] = '../images/hero-2.jpg'
theImages[2] = '../images/hero-3.jpg'
theImages[3] = '../images/hero-4.jpg'

var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++) {
    preBuffer[i] = new Image()
    preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random() * (p - 1));
function showImage() {
    document.write('<img src="' + theImages[whichImage] + '" class="float-right">');
}