you are the best guys, browser launcher is that what i was looking for, but it is quite old and some functions especially for macintosh are not working , but there is a new implementation of launchbrowser here which is the best and free:
http://browserlaunch2.sourceforge.netand supports probably all systems:
Linux (2.4.x or higher) FireFox, Mozilla, Netscape, Konqueror, Opera Supported Supported
Mac OS X (10.2 or higher) Supported
SunOS Mozilla, Firefox, Netscape Supported Supported The default browser is invoked using the sdtwebclient command.
Windows 2000 Mozilla, Firefox, IE Supported Supported.
Windows 2003 Mozilla, Firefox, IE Supported Supported.
Windows 98 Mozilla, Firefox, IE Supported Supported.
Windows NT Mozilla, Firefox, IE Supported Supported.
Windows XP Mozilla, Firefox, IE Supported Supported.
and some intresting discussion can be found here:
http://www.codecomments.com/archive245-2005-12-724947.htmlalso you may be intrested in this project :
http://multivalent.sourceforge.net/again thanx guys