Starting Jar-File from webserver - possible?

Hello to all of you.
I've got a little problem with an executable Jar-file.
I need to start it using a URL on an intranet website.
As long as this link points to a file on a local (or network) drive there is no problem. But I need to launch this application from a webserver (in the intranet).
The webbrowser won't start it then (security issues I think).
What can I do? Can I "sign" the Jar-file so the webbrowser recognizes it as somehow "trusted"?
Do I have to change any client settings?
Many thanks in advance.

The Jar contains a small portion of an application we want to run in our network (no access from outside).
It only contains the GUI the rest is done on a Corba-server / Oracle database.
We work with a centralized information management system (Hyperwave information server) and were tasked to include the entry point to this application in this (html) framework.
Stupid idea I know but this idea wasn't ours ;)

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/* From http://java.sun.com/docs/books/tutorial/index.html */
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[url=
http://forum.java.sun.com/thread.jsp?forum=421&thread=425724&tstart=0&trange=100
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