AJAX became very popular in 2005: Google used AJAX in the search box to return as you type suggested entries for your search. It is not a new programming language, but instead a new way of using existing technology with existing standards.
AJAX enables a website to load data faster and present users with less loading time.
This object must exist in a web brower's rendention of the Document Object Model (DOM). These are the minimum versions of which web browsers that can be used with AJAX:
Internet Explorer 5.0
Mozilla 1.0 / Firefox
Take a look at the other sub-menu items in this AJAX category to learn how to program your very own AJAX code.
A web host should not only be a dedicated server, but should make sure that the domain registration does not expire for long. Even if you work at home, you should be able to decipher important information like this in documents in html so that you can get an optimum deal from your web host.