function submitAssignForm(event,form){
	var file = 'data.php';

	var str = getFormValues(form,"validate");
	xmlReq = getXML(file,str);
	if (xmlReq){
		alert(xmlReq);
		var response = xmlReq.responseXML;
	//	alert(response);
		var response_details = response.getElementsByTagName('response');
		alert(response_details.length);
		if (response_details.length > 0){
			alert(response_details[0].getAttribute('user_id'));
			alert(response_details[0].getAttribute('purchase_id'));
		}
	}
	if (window.event) window.event.returnValue = false;
	else event.preventDefault();
	return false;
}



function getXML(file,str){
	var xhr = remoteRequestSetup();
  	if (xhr){
		xhr.onreadystatechange  = function(){ 
			if(xhr.readyState  == 4){
				if(xhr.status  == 200) {
					alert('should be working');
				//	return xhr;
				}
				else alert('Error code ' + xhr.status);
			}
		}; 
	}
	xhr.open( "POST", file, true );
	xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	xhr.send(str);
	return xhr;
}