function showMovie(id) {
  player_path = 'http://yamaha.formevideo.nl/invalid/';
  features = 'scrollbars=no,width=350,height=270';
  window.open(player_path,'forme',features);
}

function showIframe(id) {
  document.write('<iframe id="VideoIFrame" style="border:0px; width:350px; height:270px;" src="http://yamaha.formevideo.nl/invalid/" scrolling="no" marginheight="0" marginwidth="0" frameborder="0"></iframe>');
}

showIframe('invalid');