function getXMLHttpRequest()
{
	var request = false;
	try { request = new XMLHttpRequest(); }
	catch(err1) { try {   request = new ActiveXObject("Msxml2.XMLHTTP"); } 
	catch(err2) { try {   request = new ActiveXObject("Microsoft.XMLHTTP");} 
	catch(err3) { request = false; }}}
	return request;
}