[SOLVED] Failing to retrieve data from HTML

[stockton]

In my HTML page that calls Ajax I have a field defined as:-

<td width=195 style="position:absolute; visibility: hidden;" id="CNumber" name="CNumber"></td>

and in Ajax I attempt to retrieve its contents by :-

        var KaartNommer      = document.getElementById("CNumber").innerHTML;

and I have also tried:-

        var KaartNommer      = document.getElementById("CNumber").value;

both fail and doing an alert() I get told that it is undefined.

 

Please tell me how I got this wrong as other field values on the same webpage defined & retrieved in the same manner work fine.

[stockton]

Due to pressure of deadlines I have given up on Ajax/Javascript and am using php session variables and have thereby resolved the problem.