+#resume[checked=true] {
+/* background: none; */
+ list-style-image: url("chrome://browser/skin/devtools/debugger-play.png");
+ -moz-image-region: rect(0px, 16px, 16px, 0px);
+}
+
+#resume[checked=true]:hover {
+ -moz-image-region: rect(0px, 32px, 16px, 16px);
+}
+
+#resume ~ toolbarbutton {
+/* transition: opacity 0.15s ease-in-out; */
+}
+
+#resume:not([checked]) ~ toolbarbutton {
+/* opacity: 0.5; */
+}
+