Get the id of input on keyup
<p>I have an input box...</p>

<pre><code>&lt;input type="text" id="search_member" onkeyup="lookup(this.value);"&gt;
</code></pre>

<p>When I type in the field, it will go to function lookup(). From there I want to get the id of this input. I tried...</p>

<pre><code>var This_id = $(this).attr("id");
</code></pre>

<p>but this won't work. Any suggestions on how I can get the id?</p>
