The w2ui library is a set of interrellated jQuery plugins. It is not a adhoc port to jQuery, but was initially developed with jQuery in mind. There is no support of other frameworks such as prototype or dojo. The w2layout object allows you to create stretchable and resizable layouts with up to 6 panels. The panels are top, left, main, preview, right, and bottom. You do not have to create and initialize all 6 panels, but only the panels you need in your application.
Out of the box w2ui library is all-in-one solution. It contains all most common UI widgets: Layout, Grid, Sidebar, Tabs, Toolbar, Popup, Field Controls and Forms. You do not need to put together a collection of mismatched plugins to accomplish your goals.