function volejRDS() {
    var http_request = false;
 var request = "vyber_rds=ted";
  if (window.XMLHttpRequest)
  {
      http_request = new XMLHttpRequest();
      if (http_request.overrideMimeType) {
      http_request.overrideMimeType('text/xml');
      }
  } else if (window.ActiveXObject)
  {
      try {
        http_request = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (eror) {
        http_request = new ActiveXObject("Microsoft.XMLHTTP");
      }
  }
  http_request.onreadystatechange = function() { zmenaRDS(http_request); };

  http_request.open('GET', '/inc/pisnicka.php', true);
  http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 
  http_request.send(request);
}




function zmenaRDS(http_request){

var xmldoc = http_request.responseXML;
 if(document.getElementById('rds_author')) {document.getElementById('rds_author').innerHTML = xmldoc.getElementsByTagName('author')[0].firstChild.nodeValue;}
if(document.getElementById('rds_song')) {document.getElementById('rds_song').innerHTML = xmldoc.getElementsByTagName('song')[0].firstChild.nodeValue;}

if(document.getElementById('rds_authorr')) {document.getElementById('rds_authorr').innerHTML = xmldoc.getElementsByTagName('authorr')[0].firstChild.nodeValue;}
if(document.getElementById('rds_songg')) {document.getElementById('rds_songg').innerHTML = xmldoc.getElementsByTagName('songg')[0].firstChild.nodeValue;}

if(document.getElementById('porad')) {document.getElementById('porad').innerHTML = xmldoc.getElementsByTagName('porad')[0].firstChild.nodeValue;}

if(document.getElementById('rds_moderator')) {document.getElementById('rds_moderator').innerHTML = xmldoc.getElementsByTagName('moderator')[0].firstChild.nodeValue;}

if(document.getElementById('moderator')) {document.getElementById('moderator').src=xmldoc.getElementsByTagName('obrazek')[0].firstChild.nodeValue;

document.getElementById('moderator').alt='Právě vysílá '+xmldoc.getElementsByTagName('moderator')[0].firstChild.nodeValue; }
}




window.setInterval("volejRDS()", 5000); //pravidelna zmena, 1000 je sekunda