In firefox 3 only, when creating a new link, the link picker returns a link that looks something like

<a href="javascript:void(0);/*1214239238720*/">this</a>

解决办法一：
in the fckeditor/editor/dialog/fck_link/fck_link.js I replaced in the Ok function the line: oLink = oEditor.FCK.CreateLink( sUri ) ; with this code:

Code

解决办法二：
I got the same problem with FCK 2.3.2. The best solution is to change function CreateLink in fckeditorcode_gecko.js:
Old code I had:

Code

New code:

Code

In fact, I only replaced document.evaluate with this.EditorDocument.evaluate