function GetXmlHttpObject()
{
	var xmlHttp = null;
	try {
		/* Firefox, Opera 8.0+, Safari */
		xmlHttp = new XMLHttpRequest();
	} catch (e) {
		/* Internet Explorer */
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}