This may be something obvious, as I'm new to jQuery & jQuery mobile, but how do I selectively use a jQuery Mobile widget? Specifically, I'm doing a mobile-first RWD site & I want to use the collapsible set widget (accordion) on smaller widths (in other words, on mobile devices). But I don't want to use the widget on larger widths (such as tablets & desktops). I wan to get a bit more fancy on those devices (progressive enhancement).
I've tried Google searches & reading the docs, but as I'm not really sure what I'm looking for, my searches have been fruitless.