var hRequest = false;
function sendSimpleRequest(url, parameters, onComplete) {
  hRequest = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
	 hRequest = new XMLHttpRequest();
	 if (hRequest.overrideMimeType) {
		// set type accordingly to anticipated content type
		//hRequest.overrideMimeType('text/xml');
		hRequest.overrideMimeType('text/html');
	 }
  } else if (window.ActiveXObject) { // IE
	 try {
		hRequest = new ActiveXObject("Msxml2.XMLHTTP");
	 } catch (e) {
		try {
		   hRequest = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {}
	 }
  }
  if (!hRequest) {
	 alert('Cannot create XMLHTTP instance');
	 return false;
  }
  
  hRequest.onreadystatechange = onComplete;
  hRequest.open('POST', url, true);
  hRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  hRequest.setRequestHeader("Content-length", parameters.length);
  hRequest.setRequestHeader("Connection", "close");
  hRequest.send(parameters);
}