var sidajaxpage = "http://www.wuh-tuh-fuh.net/radio/radio.php";
function sidajax(url,divId)
 {
    // native XMLHttpRequest object
   document.getElementById(divId).innerHTML = '<p align=\"center\"><img valign=\"center\" src=\"http://www.wuh-tuh-fuh.net/radio/loading_bar.gif\" border=\"0\" alt=\"Connecting...\">&nbsp;<font color=\"00ff00\">W-T-F Radio <b>:</b> Refreshing...';
   if (window.XMLHttpRequest) {
       req = new XMLHttpRequest();
       req.onreadystatechange = function() {sidajaxDone(divId);};
       req.open("GET", url, true);
       req.send(null);
   // IE/Windows ActiveX version
   } else if (window.ActiveXObject) {
       req = new ActiveXObject("Microsoft.XMLHTTP");
       if (req) {
           req.onreadystatechange = function() {sidajaxDone(divId);};
           req.open("GET", url, true);
           req.send();
       }
   }
		   setTimeout("sidajax(sidajaxpage,'sidradiobar')", 30000);
}

function sidajaxDone(divId) {
// only if req is "loaded"
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200 || req.status == 304) {
results = req.responseText;
document.getElementById(divId).innerHTML = results;
} else {
document.getElementById(divId).innerHTML="ajax error:\n" +
req.statusText;
}
}
}