ajax
Get flash to fully experience Pearltrees
web2.0
Introduction: Although the concept isn't entirely new, XMLHttpRequest technology is implimented on more sites now than ever. Compatibility is no longer an issue (IE, Mozilla and Opera all support it), and the benefits to using it are amazing. There are too many PHP programmers avoiding any work with JavaScript beyond simple form validation, and for good reason.
ajax tutorial
<a href="http://ad.doubleclick.net/adj/ttm.xml/art;tn=3;tw=300;th=55;to=h;tcs=0;tcp=0;ta=center;tva=bottom;tc=ffffff;tnm=3;te=1;sz=100x50;ord=123456789?" target="_blank"><img src="http://ad.doubleclick.net/adj/ttm.xml/art;tn=3;tw=300;th=55;to=h;tcs=0;tcp=0;ta=center;tva=bottom;tc=ffffff;tnm=3;te=1;sz=100x50;ord=123456789?" width="100" height="50" border="0" alt="" /></a> February 09, 2005 One of the classic drawbacks to building a web application interface is that once a page has been downloaded to the client, the connection to the server is severed. Any attempt at a dynamic interface involves a full roundtrip of the whole page back to the server for a rebuild--a process which tends to make your web app feel inelegant and unresponsive.
Very Dynamic Web Interfaces