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javascript count characters in an input textbox

this counts characters
in an input textbox

but I want to display the character count next to the textfield
in the form

because I have a large form

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <meta http-equiv="content-type" content="text/html; charset=windows-1250">
  <meta name="generator" content="PSPad editor, www.pspad.com">
  <title></title>
  <script>
    function changeContent(){
        var txt = document.getElementById('testtext').value;
        document.getElementById('dest').innerHTML = txt;
    }
    function countChars(){
        var len = document.getElementById('testtext').value.length;
        document.getElementById('dest').innerHTML = len;
    }
</script>
</head>
  <body>
    <form name='test' action='test.html' method='post'>
    <input type="text" id="testtext" name="testtext" onkeyup="countChars();">
    </form>
    <table>
    <tr>
    <td id='dest'></td>
    </tr>
    </table>
  </body>
</html>

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