Can I cancel postback when user presses return in a textbox?
<p>I have a <code>textbox</code> whose input is being handled by jQuery.</p>

<pre><code>$('input.Search').bind("keyup", updateSearchTextbox);
</code></pre>

<p>When I press <code>Enter</code> in the textbox, I get a postback, which messes everything up. How can I trap that Enter and ignore it?</p>

<p>(Just to preempt one possible suggestion: The textbox has to be an <code>&lt;asp:textbox ... /&gt;</code> - I can't replace it with an <code>&lt;input ... /&gt;</code>.)</p>
