////////////////////////////////////////////////////////////////////////////////////
//  Davidgos Basic AJAX Library
////////////////////////////////////////////////////////////////////////////////////

// Find out how we can get the appropriate object (Microsoft or standards compliant ?
function getHTTPObject() 
{ if (typeof XMLHttpRequest != 'undefined') { 
	return new XMLHttpRequest(); 
	} try { 
	return new ActiveXObject("Msxml2.XMLHTTP"); 
	} catch (e) { 
	try { 
		return new ActiveXObject("Microsoft.XMLHTTP"); 
	} catch (e) {} 
	} return false; 
}

// Simply get the payload and send an alert (For testing)
function alertfromserver(URL) {
 var http=getHTTPObject();
 http.open("GET", URL ,true);
 http.onreadystatechange=function() {
  if (http.readyState==4) {
   alert(http.responseText)
  }
 }
 http.send(null)
}


// Simply get the payload and return
// The CALLBACKFN is the function called (with the output from AJAX as text)
//                as its only parameter

function getfromserver(URL,CALLBACKFN) 
{
	var http=getHTTPObject();
 	http.open("GET", URL ,true);
 	http.onreadystatechange=function() 
	{
  		if (http.readyState==4) 
		{
			CALLBACKFN(http.responseText);
  		}
	}

 	return http.send(null)
}

// Same as getfromserver except the callback function takes 2 params here, with the first being HTTP 
// response, and the second being param of interest
function getfromserver2param(URL,CALLBACKFN,P2) 
{
	var http=getHTTPObject();
 	http.open("GET", URL ,true);
 	http.onreadystatechange=function() 
	{
  		if (http.readyState==4) 
		{
			CALLBACKFN(http.responseText,P2);
  		}
	}

 	return http.send(null)
}