I would like to use a Panel in a jqm site for my Choose Language component. So that component will need to be present on every page. Here is the setup for a single-page pane
Panel is a new concept introduced in 1.3. So lets hope more tutorials will show up soon. As of your problem, I guess its better you code a panel in each of your pages. You can make changes to your page real time but make sure to call following method as documented in the documentation.
$( "#mypanel" ).trigger( "updatelayout" );
I'm not sure other ways would be feasible.