Bug 243807 profile manager hangs other dialogs' action

r=neil, sr=jst, patch by neo.liu@sun.com

suite/common/tasksOverlay.js

@@ -224,19 +224,22 @@ function checkFocusedWindow()
 
 function toProfileManager()
 {
-  var ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
-             .getService(Components.interfaces.nsIWindowWatcher);
-  var params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"]
+  const wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+                         .getService(Components.interfaces.nsIWindowMediator);
+  var promgrWin = wm.getMostRecentWindow( "mozilla:profileSelection" );
+  if (promgrWin) {
+    promgrWin.focus();
+  } else {
+    var params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"]
                  .createInstance(Components.interfaces.nsIDialogParamBlock);
   
-  params.SetNumberStrings(1);
-  params.SetString(0, "menu");
-  ww.openWindow(null, // no parent
-                "chrome://communicator/content/profile/profileSelection.xul",
-                null,
-                "centerscreen,chrome,modal,titlebar",
+    params.SetNumberStrings(1);
+    params.SetString(0, "menu");
+    window.openDialog("chrome://communicator/content/profile/profileSelection.xul",
+                "",
+                "centerscreen,chrome,titlebar",
                 params);
-  
+  }
   // Here, we don't care about the result code
   // that was returned in the param block.
 }