+window[chromehidden~="toolbar"] #navigator-throbber[busy="true"],
+toolbar[mode="text"] #navigator-throbber[busy="true"],
+toolbar[mode="icons"] #navigator-throbber[busy="true"],
+#navigator-throbber[toolbarmode="small"][busy="true"] {
+ list-style-image: url("chrome://communicator/skin/brand/throbber16-anim.gif");