-:-moz-type-unsupported .icon,
-:-moz-type-unsupported-platform .icon {
- background-image: url("chrome://mozapps/skin/plugins/contentPluginMissing.png");
-}
-:-moz-type-unsupported .icon[installable] {
- background-image: url("chrome://mozapps/skin/plugins/contentPluginDownload.png");
-}