private void StartReleaseNotesViewer(string xmlfilename, string version)
{
dockManager1.BeginUpdate();
DockPanel dp = dockManager1.AddPanel(DockingStyle.Right);
dp.ClosedPanel += new DockPanelEventHandler(dockPanel_ClosedPanel);
dp.Tag = xmlfilename;
ctrlReleaseNotes mv = new ctrlReleaseNotes();
mv.LoadXML(xmlfilename);
mv.Dock = DockStyle.Fill;
dp.Width = 500;
dp.Text = "Release notes: " + version;
dp.Controls.Add(mv);
dockManager1.EndUpdate();
}