Reaper2k2 has updated his DC Webgames site with this update:

The final testing of DCSLOTS has been completed on PlanetWeb 3.0, and the game is running great! I have yet to test in the free browser, but it should work, as the code is pure javascript 1.0. The reels, are a bit small at the moment, but due to bandwidth problems, (56k connection), I cannot test bigger reels at this time.

Check it out on his site hosted by DC HomeBrew