Listing 2 Encoded javascript text field

<?
print jsencode('<textarea name="comment"></textarea>');
cryptjsencode('<textarea name="comment"></textarea>');

function jsencode($sText) {
  $sJSText='';
  for ($i=0;$i<strlen($sText);$i++) {
    $sJSText.='%'.dechex(ord($sText[$i]));
  }
  return ("<script>document.write(unescape('$sJSText'))</script>");
}
?>