var win;
//win = 0;
var x = 0;
var y = 0;
var arg  = "";
var win = "";

function popup(url, breite, hoehe, arg){
	if(screen.width > 640)
	{
		x = (screen.availWidth  - breite) / 2;
		y = (screen.availHeight - hoehe) / 2;
	}
	if(arg != '') arg = ',' + arg;
	if(win){ if(win.closed == false){ win.close(); } }
	win = window.open(url,'win','width=' + breite + ',height=' + hoehe + ',top=' + y + ',left=' + x + arg +'');
	if(window.focus){ win.focus(); }
}


function popUpWebMedia(qStr){
  var webMediaWin=0;
  var urlStr = qStr;

  var defaultWidth = 770;
  var defaultHeight = 480;

  if(urlStr.match(/^\/themen/)){
    urlStr = "http://www.wdr.de"+urlStr;
  } else if(!urlStr.match(/^http/)){
    urlStr = "http://www.wdr.de/themen/global/webmedia/webtv/"+urlStr;
  }

  if(webMediaWin){
      if(!webMediaWin.closed) webMediaWin.close();
  }

  var links = (screen.availWidth-defaultWidth)/2;
  var oben = (screen.availHeight-defaultHeight)/2;

  var settings ='width='+defaultWidth+',';
      settings +='height='+defaultHeight+',';
      settings +='top='+oben+',';
      settings +='left='+links+',';
      settings +='status=yes,';
      settings +='scrollbars=no,';
      settings +='resizable=no,';

  webMediaWin=window.open(urlStr,'wmpwin',settings);
  webMediaWin.focus();
}