partially updating a WAR file using manager app??

[jo...@fwd.at]

hi there,

I'm using a bunch of JSPs for each form and view inside a web application.
Currently I compile them using ANT and JSPC and then package them into a 
WAR file.
This WAR-file gets deployed using ANT at the tomcat server.

However, if I only change one JSP, it would be desirable to update only 
this JSP, instead of uploading the whole WAR file and putting the whole 
application down for a moment.

Has anybody solved this problem using the manager app?
Or would it make sense to put the one updated JSP directly into the 
/work/Standalone/localhost/myapp folder?
Is this a feature to hope for in Tomcat 5?
Does any J2EE container successfully solve this problem?

thx alot
Johannes