function makeHttpRequest(url, callback_function, return_xml)
{
   var http_request = false;

   if (window.XMLHttpRequest) { // Mozilla, Safari,...
	   http_request = new XMLHttpRequest();
	   if (http_request.overrideMimeType) {
		   http_request.overrideMimeType('text/xml');
	   }

   } else if (window.ActiveXObject) { // IE
	   try {
		   http_request = new ActiveXObject("Msxml2.XMLHTTP");
	   } catch (e) {
		   try {
			   http_request = new ActiveXObject("Microsoft.XMLHTTP");
		   } catch (e) {}
	   }
   }

   if (!http_request) {
	   return false;
   }
   http_request.onreadystatechange = function() {
	   if (http_request.readyState == 4) {
		   if (http_request.status == 200) {
			   if (return_xml) {
				   eval(callback_function + '(http_request.responseXML)');
			   } else {
				   eval(callback_function + '(http_request.responseText)');
			   }
		   } else {
		   }
	   }
   }
   http_request.open('GET', url, true);
   http_request.send(null);
}


function makeHttpRequestId(url, callback_function, return_xml, id)
{
   var http_request = false;

   if (window.XMLHttpRequest) { // Mozilla, Safari,...
	   http_request = new XMLHttpRequest();
	   if (http_request.overrideMimeType) {
		   http_request.overrideMimeType('text/xml');
	   }

   } else if (window.ActiveXObject) { // IE
	   try {
		   http_request = new ActiveXObject("Msxml2.XMLHTTP");
	   } catch (e) {
		   try {
			   http_request = new ActiveXObject("Microsoft.XMLHTTP");
		   } catch (e) {}
	   }
   }

   if (!http_request) {
	   return false;
   }
   http_request.onreadystatechange = function() {
	   if (http_request.readyState == 4) {
		   if (http_request.status == 200) {
			   if (return_xml) {
				   eval(callback_function + '(http_request.responseXML, id)');
			   } else {
				   eval(callback_function + '(http_request.responseText, id)');
			   }
		   } else {
		   }
	   }
   }
   http_request.open('GET', url, true);
   http_request.send(null);
}