Dropdown menu by clicking button
<p>In my own page my top navigation having dropdown menu.</p>

<p>Now I want to do <a href="http://www.butlercc.edu/bookstore/index.cfm/" rel="nofollow">like this</a> (check the top navigation)</p>

<p>Actually I am lack of knowledge in Jquery.</p>

<p>So please help me.</p>

<p>Thanks.</p>
