User selection of Ordered or Random Slideshow

Hi

I want to allow my users to select either a random or ordered slideshow by having two slideshow links/buttons on the page instead of one.

In earlier versions I found a random slideshow php script to do this, but I have lost all info on it.

Can anyone suggest a mod or a script that will allow this. Is there a paramater that I can pass to the slidshow page to overide the default setting for an album.

Thanks in advance

Bill