Temporarily enable debugging button
Use textContent not innerText to support Firefox.
Display actual error message on Firefox
Pass the Error instead of the stack to setError()
More error display work for Firefox

Reverted most of the last 2 commits. Instead, just pass to setError() e.toString() followed by e.stack (if it exists).
Use e.stack if it exists (not if it doesn't, duh!)
Disable debug button
Moved errordiv to head for readability

It was overdrawing parameters in its former location.
Merge pull request #1 from brettle/gh-pages

Display errors in Firefox and move errordiv to head