I'm using this code
https://developer.mozilla.org/en/Creating_a_Firefox_sidebar
Do you have any ideas ?
Thanks
The only bit that would be different is you would overlay appcontent:
<vbox id="appcontent">
<splitter id="fbContentSplitter" collapsed="true"/>
<vbox id="fbContentBox" collapsed="true" persist="height">
</vbox>
</vbox>
jjb
Thanks John , your code is working very well. :)