Launching Mozilla from this chatterbox client is easy. Unless you are using Win32 you will want to comment out that portion of the code and add something like the following:

                my $pid;
                if (!defined($pid = fork)) {
                    warn "cannot fork: $!";
                    return;
                } elsif ($pid) {
                    warn "begat $pid";
                    return; # I’m the parent
                }
                exec 'mozilla', "$url";
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This patch will launch the buttonpress event in Mozilla. Each press will launch a new browser with a separate process ID. Works for me!

Update I wanted each buttonpress to open the link in a new tab. This is done with a simple modification to the exec:

           exec "mozilla -remote \"openurl($url,new-tab)\"";
[download]