var rand=Math.round(Math.random()*6);
var img=new Array(7);
img[0]="images/small-business-1.jpg";
img[1]="images/small-business-2.jpg";
img[2]="images/small-business-3.jpg";
img[3]="images/small-business-4.jpg";
img[4]="images/small-business-5.jpg";
img[5]="images/small-business-6.jpg";
img[6]="images/small-business-7.jpg";

document.write("<img src=\"" + img[rand] + "\" + alt=\"Small Business Owner\" />");