I have 4 photos, say they are called:

image1.jpg
image2.jpg
image3.jpg
image4.jpg

Is there any way to have it so that in a custom island they appear at random (on each page view)?

In other pages we have that is done with some javascript I belive.

Anyone able to tell me how this would be done (and if it is easy what code to put in the island)?

Thank you very much