If anyone has any other errors associated with Shockwave and they know what they mean, please let me know and I will include them here. The 'on mouseUp' handler does not work in Shockwave. This is a known Netscape bug. Netscape doesn't pass mouseUps to Shockwave, only mouseDowns. The work around for this is to use the mouseDown handler combined with a repeat loop.
Contributions are welcome.
Please send them to me via email. I will compile and post this weekly to the list.