Ajax paging across large dataset

We need ajax paging for a table with many rows. The table will show 10 rows on the page. The bottom of the table should have a "<< prev 1 2 3 next >>" component at the bottom. Clicking "prev" or "next" should not cause a page refresh; neither should clicking a page number. Ajax should handle paging through data so that it is fast and without page refreshes. The catch is that the table has LOTS of rows. It has far too many rows to do a preloading of all data. Instead, the ajax technique should be simple and smart. On any page P, the ajax is responsible for async loading of pages P-1 and P+1. That's all. It should preload a configurable number of pages in each direction (one page in each direction in the example given), and that's all. The table should also support sorting by columns via ajax, but in a very simple way. No sorting needs to be done in javascript. When a user clicks on a column, an ajax request should be sent to the server requesting data sorted in the way specified by the user (based on the column selected). The server returns the data and the ajax updates the table. Note that the javascript itself is not doing any sorting. In effect, the ajax for sorting is doing NO PRELOADING. It just needs to update the table WITHOUT REFRESHING the page. The code to do this should be simple, as it is doing little more than making a new web request and then updating the html. We require this specific functionality because we have too much data for a full preload, but don't want to deal with the high number of server requests involved in a Rico-type solution. Please respond with a link to ajax you have worked on previously. Thanks. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform cross-everything