//Ajax
var http_request = false;

function makeRequest(log) {
var url='ajax_rejestracja.php?login='+log;
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) {
            alert('Error - Nie stworzono instancji obiektu XMLHTTP');
            return false;
}
http_request.onreadystatechange = function() { alertContents(http_request); };
      http_request.open('GET', url, true);
http_request.send(null);

}

function alertContents(http_request) {

if (http_request.readyState == 4) {
            if (http_request.status == 200) {
           document.getElementById("tresc").innerHTML=http_request.responseText; 
						 } else {
            alert('Wystapil problem z zapytaniem.');
            }
}

}