// create a new array and assign images to 6 elements
var pix = new Array;
pix[0] = "images/rotate/accurate_mini.jpg";
pix[1] = "images/rotate/reflex-mini.jpg";
pix[2] = "images/rotate/cwwaterlogo-mini.jpg";
pix[3] = "images/rotate/ford-mini.jpg";
pix[4] = "images/rotate/fountaintirelogo-mini.jpg";
pix[5] = "images/rotate/accurate_mini.jpg";
pix[6] = "images/rotate/fv-meats-mini.jpg";
pix[7] = "images/rotate/jcfireplace.jpg";

// get a random integer between 0 and 7
var rand = Math.floor(Math.random() * 8);

// assign random image to the HTML <img> tag of pic id 
document.getElementById("pic3").src = pix[ rand ];