CKEditor

Hello all,

we need to enter i.e. following into CKEditor:

<table cellspacing="0" cellpadding="0" border="0" style="width:100%;">
<tbody>
<tr><td style="background-color:silver;">Header first Row</td></tr>
$$[myownfunction|withparameters_results_some rows to this table]$$
</tbody>
</table>

The $$[myownfunction...]$$ will result in a mysql_db lookup and will return some rows in format:

<tr><td>SomeFieldData</td></tr>

But if if enter the code above, the CKEditor changes it into

$$[myownfunction|withparameters_results_some rows to this table]$$
<table cellspacing="0" cellpadding="0" border="0" style="width:100%;">
<tbody>
<tr><td style="background-color:silver;">Header first Row</td></tr>
</tbody>
</table>

How can we disable this behaviour?