I noticed that the client-side code on The ADO.Net Services Load On Demand demo page is using a cool feature that highlights the matching letters as the user types them in (well, at least it's working on my local copy of the live demos; the remote page doesn't seem to be pulling down any data). This appears to be enabled by a client-side method of the combobox called highlightAllMatches. However, I haven't been able to find any reference to this method anywhere, which makes me wonder if there might be a trove of client-side documentation that I haven't been able to find yet...