4719 Common patchset for jdk1.7 support preparation

@@ -280,11 +280,11 @@
                 DurationHelper.this.durationHelperClose(true);
             } else if (e.getSource() == cancel) {
                 DurationHelper.this.durationHelperClose(false);
             } else if (e.getSource() == help) {
                 if (hd != null)
-                    hd.show();
+                    hd.setVisible(true);
                 else {
                     hd = new HelpDialog(DurationHelper. this.parent,
                         getString("Help for entering time duration"),
                                     false, 5, 45);
                     hd.setVisible(true);