+#signedHdrIcon[signed="unknown"] {
+ list-style-image: url("chrome://messenger/skin/smime/icons/hdrSignUnknown.gif");
+ visibility: visible;
+}
+
+#signedHdrIcon[signed="mismatch"] {
+ list-style-image: url("chrome://messenger/skin/smime/icons/hdrSignUnknown.gif");
+ visibility: visible;
+}
+