"The XMLHttpRequest object is used by JavaScript to transfer XML and other text data between client and server. The
XMLHttpRequest object allows a client-side script to perform an HTTP request. AJAX applications use the XMLHttpRequest object
so that the browser can communicate to the server without requiring a postback of the entire page. In earlier versions of
Internet Explorer, MSXML ActiveX component is liable to provide this functionality; whereas, Internet Explorer 7 and other
browsers, such as Mozilla Firefox, XMLHttpRequest is not liable to."
