Learning the Basics of AJAX
The possibilities are:
- IE newer
- IE older
- non IE
- non-support of XMLHttpRequest object
Simple Request to the Server
The next step is to make a request to the server
Simple request example
Note the way that the browser address bar does not change as you navigate between the four pages on the site. This will make things load faster for the end user.
A big problem that I can see is that most of these pages will now become 'invisible' to a search engine, or a least scanned in an isolated format and therefore do no favours for your SEO.