Bug 500944 - Manually ensure window.getAttention() is defined (which it isn't when loaded in a tab!) so we don't have weird issues when run in-a-tab.

ChatZilla only.
r=gijs


git-svn-id: svn://10.0.0.236/trunk@258201 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/extensions/irc/js/lib/utils.js

@@ -1494,3 +1494,7 @@ function strftime(format, time)
     }
     return format.replace(/%%/, "%");
 }
+
+// No-op window.getAttention if it's not found, this is for in-a-tab mode.
+if (typeof getAttention == "undefined")
+    getAttention = function() {};