Javascript has been shutoff on my mac, I need help.

Question

I can't figure out why Javascript is not running in my browsers. I predominantly use Safari, but as a test, I've tried Firefox. Javascripts just won't run on my computer.
I suspect that a couple years back, I installed an application that protected my computer from a security hole that Apple had with Disk Images running scripts. Now for the life of me, I can't figure out which application it might have been, nor how to reverse the effects. Searches on VersionTracker haven't been fruitful.
Perhaps someone can direct me to which files run at boot-up so I can trace down the culprit.
Thank You,
Lucio Cervantes
iBook G4   Mac OS X (10.3.9)   1.07 GHz 768 MB DDR SDRAM Combo

Answer 1

I present, for your viewing pleasure, more details regarding my system.
The computer has all updates applied, currently running 10.3.9. The problem is global, i.e. I'm experiencing this problem on all my accounts, including newly created accounts. The JavaScript problem occurs on ALL websites that use JavaScript to link to other pages. I've run the /Applications/Utilities/Disk Utility.app, it said it repaired a few minor issues, but ofcourse did not repair my problem.
I've given up on finding the software that is modifying my system, I think it's time to do a clean install. All my user documents should be fine, right?
The great news is... I bought myself a new MacBook Pro, 2 GHz Intel Core Duo, 1GB DDR2 SDRAM, SuperDrive, etc, etc.
The iBook G4 is now officially sole property of my wife. Which doesn't say much, since she claimed it as her own a long time ago. =)
I say it's time for me to close this thread and admit defeat.
If only there were some log of all the files that launch at startup...
Thanks for all your help,
Lucio Cervantes
iBook G4   Mac OS X (10.3.9)   1.07 GHz 768 MB DDR SDRAM Combo
iBook G4   Mac OS X (10.3.9)   1.07 GHz 768 MB DDR SDRAM Combo