make a pop-up window in php
<p>Hi I am having trouble with this piece of php code, right now it just showing a list of fields.
how do I make this a pop-up window in php?
I tried inserting javascript, but php+javascript together really confused me. thanks so much for the help!!!</p>

<pre><code>$output .= '
&lt;div class="item-list"&gt;
&lt;ul&gt;&lt;li class="first"&gt;
&lt;a target="_blank" href="/drupall/user/register" title="Create a new user account."&gt;Create new    account&lt;/a&gt;&lt;/li&gt;
&lt;li class="last"&gt;
&lt;a href="/drupall/user/password" title="Request new password via e-mail."&gt;Request new password&lt;/a&gt;&lt;/li&gt;';
</code></pre>
