[imp] Preview pane

[Staff Forwarding]

I am trying to persuade a few holdouts to convert to Horde (we are 
running 5.1.3)

The only remaining issue is the behaviour when selecting a message: they 
are used to clicking on a message title/sender and the full panel being 
replaced with the message. A back button is required, of course, to 
return to the list, but this is significantly faster than opening the 
message in a new window and has a much larger display area that the 
preview pane and dozen;t require them to use the splitter between the 
message list and message preview panels to expand the preview size.

I have an idea that the behaviour of the existing "thumb" on the 
splitter could be co-opted to help. Currently a double-click splits the 
window size evenly.

Firstly, would it be possible to click or double-click and toggle the 
panel to full size (or near full) and half size? That is probably simple 
enough, but I'm not a JavaScript programmer.

Secondly, assuming this is straight forward, could the expansion to full 
size be activated by clicking on the mail title in the message list? 
Reversing it back to half size would have to depend on the splitter 
thumb I suppose.

Not being a brilliant JavaScript programmer I don't wish to embark on 
this if someone can think of a good reason why not to do it, or if it 
would break something

/Chris