Is there a PHP class for expanding menu list using JavaScript on the client side?

Hello: I came across a very interesting expanding menu that employs JavaScript on the client side, thus removing the need for round-trip to the server. An example of such a page can be found at: http://www.ideaexchange.com/shop_idea.cfm My question is- Is there a PHP class that can create such a page using information stored in a database? If not in PHP, is there another way to accomplish the same result? Thanks, Vikram Kulkarni ***************************************************************************** This message may contain privileged and confidential information. If you think, for any reason, that this message may have been addressed to you in error, you must not disseminate or copy this message, or use its content as the basis for taking any action. Further, we would ask you to notify us immediately by return e-mail, telephone or facsimile. *****************************************************************************