Ajax XMLHttpRequest object in IE

It is quite hateful using XMLHttpRequest across browsers. This is especially severe in the case of IE.

In IE7 and above or other browsers you have to use the standard

obj = new XMLHttpRequest();

In IE6 or below, depending on versions of MSXML installed, you will have to use

obj = new ActiveXObject("Msxml2.XMLHTTP");

or

obj = new ActiveXObject("Microsoft.XMLHTTP");