ASP.NET TextBox updated by Javascript not seen
<p>This is going to be easy for someone who knows what they are doing.</p>

<p>I have a launch calendar button, a continue button, and a date textbox.  The button launches a JavaScript calendar in a popup window.  That calendar returns a date into the ReservationDate textbox field using:</p>

<pre><code>window.opener.document.getElementById('ctl00_wpm_ShowProduct_ctl10_ReservationDate').value = '&lt;%= CurrentDate %&gt;';
</code></pre>

<p>I know, it's not elegant but works.  The problem is that even though on the browser I see the date in the field, when I hit the continue button and try to access it from my .NET script, the server side script sees it as empty.</p>

<p>How do I tell the server to use the text the browser has in that field that it is not seeing?</p>

<p>I know enough to know that it's a server side versus client side issue but how do I bridge that gap?</p>
