background-position: center;
background-repeat: no-repeat;
}
-:-moz-type-unsupported .icon {
+:-moz-type-unsupported .icon,
+:-moz-type-unsupported-platform .icon {
background-image: url("chrome://mozapps/skin/plugins/contentPluginMissing.png");
}
:-moz-type-unsupported .icon[status="ready"] {