Normally, when you create a data-role=\"page\" element with jQuery mobile, it takes over the entire viewing area. For this reason, I don\'t understand how to create a sidebar. I
Looking over the beta Split View syntax you can control the "Sidebar" like this:
This would be the sidebar/split view on a tablet,
would show up stacked on a mobile device
This is the main content.
If Tablet device this would be to the right of the above content,
if mobile this would be below the above content.
Docs: http://jquerymobile.com/demos/1.0b1/ (right click to view source)
Pertinent CSS: http://jquerymobile.com/demos/1.0b1/docs/_assets/css/jqm-docs.css
A decent ALA article talking about media queries (what they used to do this): http://www.alistapart.com/articles/responsive-web-design/