This is a book about developing effective web applications. We’re not going to dance around this issue. Underneath everything else, this book is about XHTML, JavaScript, CSS, and standards that have been around for almost a decade now. Not only do we admit this truth, we embrace it. Just because these standards have been around for a<br/>while doesn’t mean that we can’t build something new and exciting out of them. Technology, like Jello, takes a while to solidify into something<br/>tasty and satisfying.