Form Issue type="hidden" changes to type="text" on Save

Paste this ASK Weather Search into the source mode on fckeditor;
For some reason when you save in source/design mode all the type="hidden" are changed to type="text" and fields are then visible? I have noticed that the editor reorders the code and moves type to the end of the statement as well...

<form id="ask$weather$search" action="http://uk.ask.com/ar" method="get" style="margin: 0; display: inline;">
<input type="hidden" name="siteid" value="10000348" />
<input type="hidden" name="sbc" value="1" />
<input type="hidden" name="qenc" value="" />
<input type="hidden" name="qsrc" value="999" />
<input type="hidden" name="l" value="dis" />
<input type="hidden" name="tool" value="wea" />
<table cellpadding="0" cellspacing="0" style="border: 1px black solid; background: white; height: 45px; width: 400px; font-family: Arial; font-size: 13px;">
<tr>
<td>
<img src="http://sp.uk.ask.com/en/i/asb/4/asklogosml.jpg" width="50" height="31" alt="Ask.com" style="margin: 5px 5px 5px 5px;" />
</td>
<td>
<table>
<tr>
<td colspan="2">
<input name="q" value="" type="text" size="40" maxlength="45" style="width: 200px;" />
</td>
<td>
<input type="submit" value="Get Weather" />
</td>
</tr>
</table>
</td>
<td style="text-align: center;">
&nbsp;
</td>
</tr>
</table>
</form>