skin global classic/1.0 jar:classic.jar!/skin/classic/global/ os=WINNT osversion<6
skin global classic/1.0 jar:classic.jar!/skin/classic/global/ os!=WINNT
skin mozapps classic/1.0 jar:classic.jar!/skin/classic/mozapps/ os!=WINNT
skin mozapps classic/1.0 jar:classic.jar!/skin/classic/mozapps/ os=WINNT osversion<6
