var ic = 30;     // Number of alternative images
    var xoxo = new Array(ic);  // Array to hold filenames
        
xoxo[0] = "http://www.prostate-cancer.com/images/image1.jpg";
xoxo[1] = "http://www.prostate-cancer.com/images/image2.jpg";
xoxo[2] = "http://www.prostate-cancer.com/images/image4.jpg";
xoxo[3] = "http://www.prostate-cancer.com/images/image5.jpg";
xoxo[4] = "http://www.prostate-cancer.com/images/image6.jpg";
xoxo[5] = "http://www.prostate-cancer.com/images/image7.jpg";
xoxo[6] = "http://www.prostate-cancer.com/images/image8.jpg";
xoxo[7] = "http://www.prostate-cancer.com/images/image9.jpg";
xoxo[8] = "http://www.prostate-cancer.com/images/image10.jpg";
xoxo[9] = "http://www.prostate-cancer.com/images/image11.jpg";
xoxo[10] = "http://www.prostate-cancer.com/images/image12.jpg";
xoxo[11] = "http://www.prostate-cancer.com/images/image13.jpg";
xoxo[12] = "http://www.prostate-cancer.com/images/image14.jpg";
xoxo[13] = "http://www.prostate-cancer.com/images/image15.jpg";
xoxo[14] = "http://www.prostate-cancer.com/images/image16.jpg";
xoxo[15] = "http://www.prostate-cancer.com/images/image17.jpg";
xoxo[16] = "http://www.prostate-cancer.com/images/image18.jpg";
xoxo[17] = "http://www.prostate-cancer.com/images/image19.jpg";
xoxo[18] = "http://www.prostate-cancer.com/images/image20.jpg";
xoxo[19] = "http://www.prostate-cancer.com/images/image21.jpg";
xoxo[20] = "http://www.prostate-cancer.com/images/image22.jpg";
xoxo[21] = "http://www.prostate-cancer.com/images/image23.jpg";
xoxo[22] = "http://www.prostate-cancer.com/images/image24.jpg";
xoxo[23] = "http://www.prostate-cancer.com/images/image25.jpg";
xoxo[24] = "http://www.prostate-cancer.com/images/image26.jpg";
xoxo[25] = "http://www.prostate-cancer.com/images/image27.jpg";
xoxo[26] = "http://www.prostate-cancer.com/images/image28.jpg";
xoxo[27] = "http://www.prostate-cancer.com/images/image29.jpg";
xoxo[28] = "http://www.prostate-cancer.com/images/image30.jpg";
xoxo[29] = "http://www.prostate-cancer.com/images/image31.jpg";
xoxo[30] = "http://www.prostate-cancer.com/images/image32.jpg";
xoxo[31] = "http://www.prostate-cancer.com/images/image33.jpg";

function pickRandom(range) {
if (Math.random)
return Math.round(Math.random() * (range-1));
else {
var now = new Date();
return (now.getTime() / 1000) % range;
}
}
// Write out an IMG tag, using a randomly-chosen image name.
var choice = pickRandom(ic);