In the file: lib/UI/vars/UI_STD_HEAD my $regex = q{__MV_DHTML_BROWSER__} || 'MSIE.*5.5|MSIE.*[6-9]|Mozilla\W*5|Mozilla.*Gecko'; I believe should read: my $regex = q{__MV_DHTML_BROWSER__} || 'MSIE.*5.5|MSIE.*[6-9]|Mozilla\W*5|Mozilla.*Gecko|Opera.*[7-9]'; Don