//  var target = 0;
//  if(server_target == "1") {
//      target = 1;
//  }
//  var target = 0;
    
var adtest = false;

var channel = "";
var query = "PDAs";
var click_url = "";var frameSrc ="http://ad.cpc.unister-gmbh.de/ads/inclick_flexad_iframe.php"
+ "?d=6edac6b5f8d8c9c2ef8c31482a45b9ce"
+ "&adtest=" + adtest
+ "&channel=" + escape(channel)
+ "&query=" + escape(query)
+ "&click_url=" + escape(click_url)
+ "&ts=" + 1283463127;
var iFrameString = '<iframe id="adframe_966" src="'+ frameSrc +'" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" frameborder="0" scrolling="no" height="830" width="227"></iframe>';
// workaround for firefox iframe caching

document.write(iFrameString);
<!--document.getElementById('adframe_966').src = frameSrc;-->