javascript
Did IE6 Make Web 2.0 Possible?
One of the cornerstones of Web 2.0 is the XMLHttpRequest object [http://en.wikipedia.org/wiki/XMLHttpRequest]. It allows JavaScript to call back to a web server without incurring a traditional HTTP postback. It's the heart and soul of AJAX [http://builder.com.com/5100-6371-6056954.html], and