I cannot move a TextBox on a webForm, because I cannot switch to Absolute positioning.  {Lauout-Menu is not amoung other menus.}

Can you tell me what can i do to Place a button[or else]   at the center of the webForm ?

Basically where can I found The positioning-OPTIONS {in order that I could set ABSOLUTE-position}

I am sure it is an easy job for you All.

Thanks.

Select Options from the Tools menu.  In the Options dialog, select HTML Designer and then the CSS Styling mode.  Check the box for Change positioning to absolute......

You should now be able to place the object on the web form first, and then move it to anywhere on the page.  Note that content pages have restrictions.

Layout menu no longer exists. Try Format | Position... instead. If you want to center button in the form, absolute positioning is not the best approach. You can center button in, say, 800x600 form, but what if browser window or text size is bigger? Visually impaired users may decide to set any text size and ignore specified fonts, so what did fit into 800x600 on your screen will overlap in user's browser. Try using tables or CSS/Div instead. Try place form elements in table cells, for example and place button in the center cell. Trivial example:

    <table width="100%">
        <tr>
            <td>
                Some text
            </td>
        </tr>
        <tr>
            <td align="center" valign="middle">
                <input type="button" value="Click" />
            </td>
        </tr>
        <tr>
            <td>
                Some text
            </td>
        </tr>
    </table>

Thanks a lot   Mikhail ,  I really appreciated your specific remarks