[TYPO3-project-4-3] Final solution to all IE6 errors!

[Benjamin Mack]

Hey guys (& gals),

this morning I took the time to dig into the IE6 problems and all the 
error messages. With Steffen I came to the conclusion that it's related 
to the ext-prototype-adapter.js. Basically it's a faulty adapter and 
always throws some errors when unloading the page.

So, I haven't really dug into the prototype-adapter.js file, but we have 
two ways to solve this issue:

1) Exchange the prototype adapter with the ext-base class

Pros:
  - it works and is just one line to fix the problem
  - Protoype and extJS are still working
  - Maybe the execution of things are faster as they are implemented 
better in ext?

Cons:
  - the footprint of ext-base.js is 35KB instead of the 16KB of the 
prototype-adapter.

2) Dig down deeper in the ext-prototype adapter and find the problem, 
fix it in our SVN and file a bug report to the ext-team.

Pros:
  - We'll find the source of the problem

Cons:
  - More work on our end? ;-)


All the best,
Benni.