AJAX browsers

Opera 8.0+, Firefox, Safari, Netscape 7

To create an AJAX object in these browsers, the XMLHttpRequest object is used.

Example:

<script type="text/javascript">
ajaxObject = XMLHttpRequest();
</script>

Internet Explorer

To create an AJAX object in this browser, the ActiveXObject is used.

Example:

<script type="text/javascript">
ajaxObject = new ActiveXObject("Msxml2.XMLHTTP");

//and if the above does not work we will use.....

ajaxObject = new ActiveXObject("Microsoft.XMLHTTP");
</script>