https://ptolemy.berkeley.edu#in_browser
will open up the Ptolemy website using the operating system web browser.
The ptolemy.actor.gui.BrowswerLauncher class implements this functionality. This class has the following license.
This code is Copyright 1999-2001 by Eric Albert (ejalbert@cs.stanford.edu) and may be redistributed or modified in any form without restrictions as long as the portion of this comment from this paragraph through the end of the comment is not removed. The author requests that he be notified of any application, applet, or other binary that makes use of this code, but that is more out of curiosity than anything and is not required. This software includes no warranty. The author is not responsible for any loss of data or functionality or any adverse or unexpected effects of using this software.
Credits:
Steven Spencer, JavaWorld magazine (Java//Tip 66)
Thanks also to Ron B. Yeh, Eric Shapiro, Ben Engber, Paul Teitlebaum, Andrea Cantatore, Larry Barowski, Trevor Bedzek, Frank Miedrich, and Ron Rabakukk
On November 3, 2003, BrowserLauncher was downloaded from http://browserlauncher.sourceforge.net/. That URL no longer exists, there is a replacement package which is LGPL'd. See http://web.archive.org/web/20031028032907/http://browserlauncher.sourceforge.net/ for the original web page.