// create an httpobject and returns it
// the httpobject is the core of ajax
// it connects to a webpage and get its result

function getHTTPObject() {  
	var xmlhttp;
	/*@cc_on
	@if (@_jscript_version >= 5)
	try {
	  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (e) {
	  try {
		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
		xmlhttp = false;
		}
	  }
	@else
	xmlhttp = false;
	@end @*/
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
	try {
		xmlhttp = new XMLHttpRequest();
		} catch (e) {
		xmlhttp = false;
		}
	}
	return xmlhttp;
}