There is an error in the "inline buttons" documentation
http://jquerymobile.com/demos/1.0a4.1/docs/buttons/buttons-inline.html

Displayed code

1. <div data-inline="true">
2. <a href="index.html" data-role="button">Cancel</a>
3. <a href="index.html" data-role="button" data-theme="b"Save</a>
4. &lt;/div>

Actual working code, used in the page

1. <a href="index.html" data-role="button" data-inline="true">Cancel</a>
2. <a href="index.html" data-role="button" data-theme="b" data-inline="true">Save</a>