Simple Javascript, difficult placement

Hi guys,
I have a very simple requirement for which Ive spent the last 3 days trying to figure out.
Requirement:
Show "JAVASCRIPT DISABLED" on form when Javascript is disabled. Show "" otherwise.
What I've done:
I placed a TextField on MasterPage with default text "JAVASCRIPT DISABLED".
In event "data::docReady - (JavaScript, client)" wrote a line Page1.StaticText3.rawValue = ""; in order to hide the message.
Problem:
For some reason, this script executes even when Javascript is disabled which completely defeats the purpose of the assignment.. Where should I place this Javascript such that it executes ONLY when Javascript is actually enabled....
Please help! Thanks!

Guys, thanks for the reply.
Jono - I've tried to follow the steps from your document 'Javascript and version test.pdf' but the following problem occurs. My Javscript code runs even when Javascript is disabled! I know this sounds insane, but please look at the snapshots.
Note: For the sake of showing you the problem, I've reversed the visible/hidden.
Initially the TextField is set to Hidden. Then, in the initialize event - I set it to Visible...
As you can see below, even when the bar says "Javascript is currently disabled", it sets the TextField to Visible.
I've been hacking at this for days now, is there something that I'm missing. This shouldnt be this difficult, right?
Thanks again for your help.

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