Cancel browser widget navigation?

[hh]

> Yes, I am aware of how to cancel clicks using JavaScript. Remember that my
> original post stated that I was looking for a way to cancel navigation
> using a method other than JavaScript (which is the solution I’m currently
> using) :-)
> 
> Ideally the browser widget would allow us to cancel navigation links using
> LCS.

Assuming you mean "block" with "cancel".

The browser widget doesn't know anything about what you do in the editor.
It has always the original htmltext you used for starting the editor.

So, how should this work without using a lot of JavaScript (eventually changing libbrowser)?