// Type the number of images you are rotating.

NumberOfImagesToRotate = 28;


// Specify the first and last part of the image tag. 

FirstPart = '<img src="/images/pics/';
LastPart = '.jpg" alt="Renton Denture Clinic" width="310" height="220">';

function printImage() {
var r = Math.ceil(Math.random() * NumberOfImagesToRotate);
document.write(FirstPart + r + LastPart);
}