Help with Minecraft Classic

Alright, so i just found a really cool hacked client for Minecraft Classic (Im not gonna lie ) and when I went to play it, it just have me a blank screen, like nothing, not even a dark box. My mac is running 10.5.8.

Edit: i just tried running Minecraft (normal minecraft) in browser and it didn't work, not that i care but it might have something to do with the Classic.


Thanks in advance!

Party