I want to make a option on my toolbar a "drop down" element. I want the user to be able to mouse over links and be able to select their link from a scroll out menu. below is my navbar. could someone please help.

<!-- Site navigation menu -->
<ul class="navbar">
<br><br>
<h2><b>Site Navigation</h2>
<hr width="70" align="center">
<center>
<li><a href="index.html">Home</a>
<li><a href="activities.html">Activities</a>
<li><a href="bulletin.html">Bulletin</a>
<li><a href="churchLeaders.html">Church Leaders</a>
<li><a href="contact.html">Contact Us</a>
<li><a href=" ">Links</a><br />
</ul></center>