[Seaside] Seaside sessions

[Ramon Leon]

> 
> > renderSessionKeepAliveOn: html
> >     html script: ((html updater)
> >         every: ((self preferenceAt: #sessionExpirySeconds) 
> - 60) seconds;
> >         callback: [];
> >         yourself)
> 
> Better use:
> 
>     html script: (html request
>        every: (self preferenceAt: #sessionExpirySeconds) - 60)
> 
> This is more lightweight from the JavaScript perspective and 
> you don't even need to specify a callback.
> 
> Lukas

Yea, but you have the unfair advantage of it being your code. ;)  Excellent
though, this is so old this is the first time I've looked at this thing in a
year.

Ramon Leon
http://onsmalltalk.com