Javascript - Conditional Markup Rendering According To Web.config Key?

Jan 19, 2011

I have a key in web.config as -

<add key="IsDemo" value ="true"/>

I want to show/hide markup based on above web.config entry for a non-server html tag without using code behind file (as there is no .cs file and there are no runat=server controls).
Something similar to following pseudo code:

IF ( IsDemo == "true" )
THEN
<tr>
<td id="tdDemoSection" colspan="2" align="left" valign="top">
<.....>
</td>
</tr>
ENDIF

Does anyone know that we can write such conditional logic in .aspx markup? \

EDIT:

Section I'm hiding or showing have some data like username and password. So, I do not want user to use Firebug or Web Developer Tools to see hidden markup. markup should not go to client side.

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