How to include jQuery in an external .js file?
<p>I want to provide my clients a simple code to insert and get my plugin. </p>

<p>The code:</p>

<pre><code>&lt;div id='banner-lujanventas'&gt;&lt;/div&gt;
&lt;script src="http://lujanventas.com/plugins/banners/script.js" type="text/javascript"&gt;&lt;/script&gt;
</code></pre>

<p>The problem is that my plugin only works with jQuery. How do I check if a version of jQuery is installed on my script.js file and if not include it? (I can only modify my /script.js file)</p>
