javascript(jQuery) unknow events management
===

I hope I will be clear enough but my situation and what I want to do a little complicated. 

I will start explaining my problem with [this jsfiddle](http://jsfiddle.net/5MB5x/)

As you can see, there are 3 nested blocks.
The javascript code is divided in 2 parts: the first one is something I can't change (well, in fact I don't want to touch it :x). This script create events on all the blocks, with a "return false" to stop propagation (I have the same problem with "e.stopPropagation").
The other part of the javascript is a script I am writing. After pressing enter key, I want to change the behavior of the click: when I click on #b (or #c wich is in #b) I want to display "gruik" and only "gruik".
To do that, I kill the other events "click" (from the code I can't change) and create my event "click". 

Now, my real situation: the "code I cannot change" is the highstock library (18000 lines of code that I don't really want to dig into) which creates some graphic (which is represented by the blocks in my example). I don't really know if they use 'live', 'bind' or 'delegate' and I don't know which block has event attached on (the graph is in several nested blocks).

Now my problem: I kill some events in my example but it is not suitable, for several reasons: I could probably kill(and unbind+undelegate) all "click" events in all the children of the container of my graph, but how could I "revive them" after that? So, a first question: is it possible when killing an event to keep it somewhere to "revive" it? 
Another solution would be to create a "top priority" for my own events without killing anybody, but I do not think that is possible in javascript.

I hope I have been clear enough :/

PS: [a demo of highstock library](http://www.highcharts.com/stock/demo/) 
