I'm going to be making a short trip over to Bangkok from Phnom Penh this week and would like to buy programming manuals for staff training purposes, we have a few good book shops here but the books are always 1-4 years out of date so are unsuitable for training purposes. I'm looking for books on AJAX or advanced JavaScript (DOM, httpRequest etc), as well as a PHP and JavaScript function dictionary (has anyone seen those?).

If anyone can recommend a good shop to get this kind of stuff it would most appreciated!