var img = new Array();

img[1] = "img/pic01";
img[2] = "img/pic02";
img[3] = "img/pic03";
img[4] = "img/pic04";
img[5] = "img/pic05";
img[6] = "img/pic06";
img[7] = "img/pic07";
img[8] = "img/pic08";
img[9] = "img/pic09";
img[10] = "img/pic10";
img[11] = "img/pic11";
img[12] = "img/pic12";
img[13] = "img/pic13";
img[14] = "img/pic14";
img[15] = "img/pic15";
img[16] = "img/pic16";
img[17] = "img/pic17";
img[18] = "img/pic18";
img[19] = "img/pic19";
img[20] = "img/pic20";
img[21] = "img/pic21";
img[22] = "img/pic22";
img[23] = "img/pic23";
img[24] = "img/pic24";
img[25] = "img/pic25";
img[26] = "img/pic26";
img[27] = "img/pic27";
img[28] = "img/pic28";
img[29] = "img/pic29";
img[30] = "img/pic30"
img[31] = "img/pic31"
img[32] = "img/pic32"
img[33] = "img/pic33"
img[36] = "img/pic36"
img[37] = "img/pic37"
img[38] = "img/pic38"
img[39] = "img/pic39"
img[40] = "img/pic40"
img[41] = "img/pic41"

max = 41;     // number of images

function drawImage() {
    index = (Math.floor(Math.random() * 100) % max) + 1;
    document.writeln('<center>');
    document.writeln('<A HREF="'+img[index]+'.jpg" target="_blank"><img src='+img[index]+'b.jpg width="300" "height="200"></A>');
    document.writeln('</center>');
}