Unable to click in textbox after applying ShadedBorder

I am using ASP.Net, and have a textbox inside the div that I want to round. When I ShadedBorder rounds the div, the textbox does not allow me to click my mouse in it. Can someone tell me how I can fix this so a user can click inside the textbox to type in it? I start out with focus on it, but if focus moves away from it, you cannot use your mouse to put it back. Thank you.

<code>
<div id="main">
<div id="login" runat="server">
<span>Type in your password </span>
<br />
<p> <asp:TextBox ID="txtBarcode" runat="server" Width="200px"> </asp:TextBox> </p>
<asp:Button ID="btnSubmit" runat="server" Text="Submit" onclick="btnSubmit_Click" />
</div>
</div>
</code>

Javascript call to shade and round the main div:
border.render('main');

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