I highly recommend doing this simple client side manipulation (show/hode rows controls, etc.) with JavaScript or even more easily with a .js library like jQuery. After you include the jQuery scripts in your application, this is all you need to do to have that DIV be hidden after the page has completed its initialization.

Include this script section at the top of your page or in a referenced .js file if you already have one:

<script type=text/javascript>



 //$(document).ready is used to define a function that is guaranteed to be called only after the DOM has been initialized.

 $(document).ready(function () {

    //Hide the div

    $('#showdiv').hide();

    //conversely do the following to show it again if needed later

    //$('#showdiv').show();

 });



</script>

jQuery API documentation on this method:

http://api.jquery.com/hide/