function GetHttpRequest() {

	var xmlHttp;
		
	try  {
	  // Firefox, Opera 8.0+, Safari
	  xmlHttp=new XMLHttpRequest();
	} catch (e) {
	  // Internet Explorer
	  try {
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (e) {
		try {
		  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {
		  alert("Your browser does not support AJAX!");
		  return false;
		}
	  }
	}
	
	return xmlHttp;
}