Need help 'observe_field' to work in Safari or Konqueror

Konquerer isn't officially supported by Prototype.js which Rails uses
for it's Ajax stuff.

The latest version of Prototype is compatible with the following
browsers:
Browser Version(s)
Mozilla Firefox ≥ 1.5
Microsoft Internet Explorer ≥ 6.0
Apple Safari ≥ 2.0
Opera ≥ 9.25

There should be no issue with Safari 3 or 2.

After a couple of days of tearing my hair out I have solved the problem
another way. I have ditched the use of the 'observe_field' helpers and
written the routine from scratch in java script.

Now it works in all of these browsers.

If anyone else stumbles accross this thread, I was greatly helped by
this howto:
http://www.trans4mind.com/personal_development/JavaScript/menuWrite.htm