Don't use "(null)" for the image filename if there is no filename in the

url.  Bug 121504, r=doron, sr=blake

xpfe/communicator/resources/content/nsContextMenu.js

@@ -118,7 +118,12 @@ nsContextMenu.prototype = {
            var saveImageMenuItem = document.getElementById( 'context-saveimage' );
            var imageName = extractFileNameFromUrl(this.imageURL);
            var bundle = srGetStrBundle("chrome://communicator/locale/contentAreaCommands.properties");
-           var caption = bundle.formatStringFromName("saveImageAs",[imageName],1);
+           var caption;
+           if (imageName) {
+              caption = bundle.formatStringFromName("saveImageAs", [imageName], 1);
+           } else {
+              caption = bundle.GetStringFromName("saveImageAsNoFilename");
+           }
 
            saveImageMenuItem.setAttribute( "label", caption );
         }

xpfe/communicator/resources/locale/en-US/contentAreaCommands.properties

@@ -1,6 +1,7 @@
 # context menu strings
 
 saveImageAs=Save Image (%S)...
+saveImageAsNoFilename=Save Image...
 searchText=Search %S for "%S"
 
 SavePageTitle=Save Web Page