Index: modules/overlay/overlay-parent.js
===================================================================
RCS file: /cvs/drupal/drupal/modules/overlay/overlay-parent.js,v
retrieving revision 1.34
diff -u -p -r1.34 overlay-parent.js
--- modules/overlay/overlay-parent.js	27 Mar 2010 05:47:08 -0000	1.34
+++ modules/overlay/overlay-parent.js	14 Apr 2010 11:18:18 -0000
@@ -752,7 +752,9 @@ Drupal.overlay.clickHandler = function (
     else if ($target.get(0).hostname != window.location.hostname) {
       // Add a target attribute to the clicked link. This is being picked up by
       // the default action handler.
-      $target.attr('target', '_new');
+      if (!$target.attr('target')) {
+        $target.attr('target', '_new');
+      }
     }
     // Non-admin links should close the overlay and open in the main window.
     // Only handle them if the overlay is open and the clicked link is inside