"Browse Server" callback instead of pop-up?

Hi,

I know there was a topic once about this, but I can't find it anymore, so I would like to ask again here:

Is it possible to execute a JS function instead of opening a pop-up in CKEDitor 4.3 when the user clicks on the "Browse Server" button?

There was a hack for 4.0 but it does not work with 4.3 anymore...

regards

CFI