var img = new Array(
'<img src="/images/elec_beam_welding.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />',
'<img src="/images/dev_lab.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />',
'<img src="/images/laserequip1.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />',
'<img src="/images/laserequip2.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />',
'<img src="/images/saa_lab_1.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />',
'<img src="/images/saa_lab_2.jpg" alt="With javascript enabled, you should see a random display of graphics and photos from the Development category." />');
var max = img.length;
var num = Math.floor((Math.random() * max));
document.writeln(img[num]);