Theming The jQuery UI Accordion plugin uses the jQuery UI CSS Framework to style its look and feel, including colors and background textures. We recommend using the ThemeRoller tool to create and download custom themes that are easy to build and maintain. If a deeper level of customization is needed, there are widget-specific classes referenced within the jquery.ui.accordion.css stylesheet that can be modified. These classes are highlighed in bold below.

activate Signature: .accordion( "activate" , index ) Activate a content part of the Accordion programmatically. The index can be a zero-indexed number to match the position of the header to close or a Selector matching an element. Pass false to close all (only possible with collapsible:true).