I am using a css theme since I am not artistically inclined, although I am trying to learn lol. Anyway, I am using this theme, and I am having trouble getting the menu to drop down. I will post my code below, but first I will explain a few things.

I have been researching this on google for a few days now trying to figure out how. I have come across some examples, and I have tried plugging in some things inside the css , but it always breaks the menu when I try. I am not an expert web designer of course, but I am not new to it either. Though I might look like it I am sure compared to the knowledge of others on here lol. Basically what I want is the menu to drop down when the mouse is over it. Any help would be appreciated.

html code

Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!--
Design by Free CSS Templates
http://www.freecsstemplates.org
Released for free under a Creative Commons Attribution 2.5 License

Name       : Arthropod  
Description: A two-column, fixed-width design with dark color scheme.
Version    : 1.0
Released   : 20100422

-->
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Arthropod   by Free CSS Templates</title>
<link href="style.css" rel="stylesheet" type="text/css" media="screen" />
<script type="text/javascript" src="jquery/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="jquery/jquery.gallerax-0.2.js"></script>
<style type="text/css">
@import "gallery.css";
</style>
</head>
<body>
<div id="wrapper">
	<div id="header">
		<div id="logo">
			<h1></h1>
			<p></p>
		</div>
	</div>
	<!-- end #header -->
	<div id="menu">
		<ul>
			<li class="current_page_item"><a href="#">Home</a>
			<ul>
			<li><a href="bio.html">bio</a></li>
			</ul>
			<li><a href="#">History</a></li>
			<li><a href="#">Resources</a></li>
			<li><a href="#">Legislative Page</a></li>
			<li><a href="#">Membership</a></li>
			<li><a href="#">Friends</a></li>
			<li><a href="#">Contact Us</a></li>
		</ul>
	</div>
	<!-- end #menu -->
	<div id="page">
		<div id="page-bgtop">
			<div id="page-bgbtm">
				<div id="content">
					<div id="gallery-wrapper">
						<div id="gallery"> <img class="output" src="images/kabclogo.png" alt="" />
							<div id="thumbnail-bg">
								<ul class="thumbnails">
									<li><img src="images/img04.jpg" title="Monument Valley" alt="" width="604" height="375"></li>
									<li><img src="images/img05.jpg" title="Honey Bee" alt="" width="100" height="75"></li>
									<li><img src="images/img06.jpg" title="Cup of Coffee" alt="" width="100" height="75"></li>
									<li><img src="images/img07.jpg" title="Grand Tetons" alt="" width="100" height="75"></li>
								</ul>
							</div>
							<br class="clear" />
						</div>
						
						<!-- end -->
					</div>
					<div class="post">
						<h2 class="title"><a href="#">Welcome to Arthropod </a></h2>
						<p class="meta"><span class="date">September 10, 2009</span><span class="posted">Posted by <a href="#">Someone</a></span></p>
						<div style="clear: both;">&nbsp;</div>
						<div class="entry">
							<p>This is <strong>Arthropod </strong>, a free, fully standards-compliant CSS template designed by FreeCssTemplates<a href="http://www.nodethirtythree.com/"></a> for <a href="http://www.freecsstemplates.org/">Free CSS Templates</a>.  The slideshow uses photos from <a href="http://www.pdphoto.org">PDPhoto.org</a> and is powered by Gallerax (a jQuery plugin by <a href="http://www.nodethirtythree.com/">NodeThirtyThree</a>). This free template is released under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attributions</a> license, so you’re pretty much free to do whatever you want with it  (even use it commercially) provided you keep the links in the footer  intact. Aside from that, have fun with it :)</p>
							<p>Sed lacus. Donec lectus. Nullam pretium nibh ut turpis. Nam bibendum. In nulla tortor, elementum ipsum. Proin imperdiet est. Phasellus dapibus semper urna. Pellentesque ornare, orci in felis. Donec ut ante. In id eros. Suspendisse lacus turpis, cursus egestas at sem.</p>
							<p class="links"><a href="#">Read More</a>&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;<a href="#">Comments</a></p>
						</div>
					</div>
					<div class="post">
						<h2 class="title"><a href="#">Lorem ipsum sed aliquam</a></h2>
						<p class="meta"><span class="date">September 10, 2009</span><span class="posted">Posted by <a href="#">Someone</a></span></p>
						<div style="clear: both;">&nbsp;</div>
						<div class="entry">
							<p>Sed lacus. Donec lectus. Nullam pretium nibh ut turpis. Nam bibendum. In nulla tortor, elementum vel, tempor at, varius non, purus. Mauris vitae nisl nec metus placerat consectetuer. Donec ipsum. Proin imperdiet est. Phasellus <a href="#">dapibus semper urna</a>. Pellentesque ornare, orci in consectetuer hendrerit, urna elit eleifend nunc, ut consectetuer nisl felis ac diam. Etiam non felis. Donec ut ante. In id eros. Suspendisse lacus turpis, cursus egestas at sem.  Mauris quam enim, molestie in, rhoncus ut, lobortis a, est.</p>
							<p class="links"><a href="#">Read More</a>&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;<a href="#">Comments</a></p>
						</div>
					</div>
					<div style="clear: both;">&nbsp;</div>
				</div>
				<!-- end #content -->
				<div id="sidebar">
					<ul>
						<li>
							<div id="search" >
								<form method="get" action="#">
									<div>
										<input type="text" name="s" id="search-text" value="" />
										<input type="submit" id="search-submit" value="GO" />
									</div>
								</form>
							</div>
							<div style="clear: both;">&nbsp;</div>
						</li>
						<li>
							<h2>Aliquam tempus</h2>
							<p>Mauris vitae nisl nec metus placerat perdiet est. Phasellus dapibus semper consectetuer hendrerit.</p>
						</li>
						<li>
							<h2>Categories</h2>
							<ul>
								<li><a href="#">Aliquam libero</a></li>
								<li><a href="#">Consectetuer adipiscing elit</a></li>
								<li><a href="#">Metus aliquam pellentesque</a></li>
								<li><a href="#">Suspendisse iaculis mauris</a></li>
								<li><a href="#">Urnanet non molestie semper</a></li>
								<li><a href="#">Proin gravida orci porttitor</a></li>
							</ul>
						</li>
						<li>
							<h2>Blogroll</h2>
							<ul>
								<li><a href="#">Aliquam libero</a></li>
								<li><a href="#">Consectetuer adipiscing elit</a></li>
								<li><a href="#">Metus aliquam pellentesque</a></li>
								<li><a href="#">Suspendisse iaculis mauris</a></li>
								<li><a href="#">Urnanet non molestie semper</a></li>
								<li><a href="#">Proin gravida orci porttitor</a></li>
								<li><a href="#">Suspendisse iaculis mauris</a></li>
								<li><a href="#">Urnanet non molestie semper</a></li>
							</ul>
						</li>
						<li>
							<h2>Archives</h2>
							<ul>
								<li><a href="#">Aliquam libero</a></li>
								<li><a href="#">Consectetuer adipiscing elit</a></li>
								<li><a href="#">Metus aliquam pellentesque</a></li>
								<li><a href="#">Suspendisse iaculis mauris</a></li>
								<li><a href="#">Urnanet non molestie semper</a></li>
								<li><a href="#">Proin gravida orci porttitor</a></li>
								<li><a href="#">Suspendisse iaculis mauris</a></li>
								<li><a href="#">Urnanet non molestie semper</a></li>
							</ul>
						</li>
					</ul>
				</div>
				<!-- end #sidebar -->
				<div style="clear: both;">&nbsp;</div>
			</div>
		</div>
	</div>
	<!-- end #page -->
</div>
<div id="footer">
	<p>Copyright (c) 2011 Kabc.org. All rights reserved. Design by Jason Schoon and Leah Noakes.  CSS Theme from <a href="http://www.freecsstemplates.org">Free CSS Templates</a>.</p>
</div>
<!-- end #footer -->
</body>
</html>
CSS code
Code:
/*
Design by Free CSS Templates
http://www.freecsstemplates.org
Released for free under a Creative Commons Attribution 2.5 License
*/

body {
	margin: 0;
	padding: 0;
	background: #FFFFFF;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #464032;
}

h1, h2, h3 {
	margin: 0;
	padding: 0;
	font-weight: normal;
	color: #221D1D;
}

h1 {
	font-size: 2em;
}

h2 {
	font-size: 2.4em;
}

h3 {
	font-size: 1.6em;
}

p, ul, ol {
	margin-top: 0;
	line-height: 180%;
}

ul, ol {
}

a {
	text-decoration: none;
	color: #ED3A00;
}

a:hover {
}

#wrapper {
	width: 960px;
	margin: 0 auto;
	padding: 0;
}

/* Header */

#header {
	width: 940px;
	height: 70px;
	margin: 0 auto;
}

/* Logo */

#logo {
	float: left;
	height: 40px;
	margin: 0;
	color: #000000;
}

#logo h1, #logo p {
	margin: 0;
	padding: 0;
}

#logo h1 {
	float: left;
	padding-left: 20px;
	letter-spacing: -1px;
	text-transform: lowercase;
	font-size: 3.8em;
}

#logo p {
	float: left;
	margin: 0;
	padding: 26px 0 0 10px;
	font: normal 14px Georgia, "Times New Roman", Times, serif;
	font-style: italic;
	color: #5E4E38;
} 

#logo p a {
	color: #5E4E38;
}

#logo a {
	border: none;
	background: none;
	text-decoration: none;
	color: #A83A01;
}

/* Search */

#search {
	float: right;
	width: 280px;
	height: 60px;
	padding: 20px 0px 0px 0px;
	background: #E9E3CB;
	border-bottom: 4px solid #FFFFFF;
}

#search form {
	height: 41px;
	margin: 0;
	padding: 10px 0 0 20px;
}

#search fieldset {
	margin: 0;
	padding: 0;
	border: none;
}

#search-text {
	width: 170px;
	padding: 6px 5px 2px 5px;
	border: none;
	background: #FFFFFF;
	text-transform: lowercase;
	font: normal 11px Arial, Helvetica, sans-serif;
	color: #464032;
}

#search-submit {
	width: 50px;
	height: 23px;
	border: 1px solid #525252;
	background: #525252;
	font-weight: bold;
	font-size: 10px;
	color: #FFFFFF;
}

/* Menu */

#menu {
	width: 940px;
	height: 36px;
	margin: 0 auto;
	padding: 0;
	background: #FC9D00;
}

#menu ul {
	margin: 0px 0px 0px 10px;
	padding: 0;
	list-style: none;
	line-height: normal;

}

#menu li {
	float: left;

	}

	
#menu a {
	display: block;
	height: 26px;
	margin-bottom: 10px;
	padding: 10px 20px 0px 20px;
	text-decoration: none;
	text-align: center;
	text-transform: uppercase;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 11px;
	font-weight: bold;
	color: #FFFFFF;
	border: none;
}

#menu a:hover, #menu .current_page_item a {
	background: #E93301;
	text-decoration: none;
}

#menu .current_page_item a {
	background: #E93301;
	color: #FFFFFF;
}
}
#nav li:hover ul{ /* Display the dropdown on hover */
	left:0; /* Bring back on-screen when needed */
}
#nav li:hover a{ /* These create persistent hover states, meaning the top-most link stays 'hovered' even when your cursor has moved down the list. */

	text-decoration:underline;
}
#nav li:hover ul a{ /* The persistent hover state does however create a global style for links even before they're hovered. Here we undo these effects. */
	text-decoration:none;
}
#nav li:hover ul li a:hover{ /* Here we define the most explicit hover states--what happens when you hover each individual link. */
	
}

/* Page */

#page {
	width: 940px;
	margin: 0 auto;
	padding: 0;
}

#page-bgtop {
	padding: 20px 0px;
}

#page-bgbtm {
}

/* Content */

#content {
	float: right;
	width: 620px;
	padding: 0px 0px 0px 0px;
}

.post {
	margin-bottom: 15px;
}

.post-bgtop {
}

.post-bgbtm {
}

.post .title {
	margin-bottom: 10px;
	padding: 12px 0 0 0px;
	letter-spacing: -.5px;
	color: #000000;
}

.post .title a {
	color: #221D1D;
	border: none;
}

.post .meta {
	height: 30px;
	border-bottom: 1px solid #DBDBDB;
	background: #F4F4F4;
	margin: 0px;
	padding: 0px 0px 0px 0px;
	text-align: left;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 13px;
	font-weight: bold;
}

.post .meta .date {
	float: left;
	height: 24px;
	padding: 3px 15px;
	color: #464032;
}

.post .meta .posted {
	float: right;
	height: 24px;
	padding: 3px 15px;
	color: #464032;
}

.post .meta a {
	color: #464032;
}

.post .entry {
	padding: 0px 0px 20px 0px;
	padding-bottom: 20px;
	text-align: justify;
}

.links {
	padding-top: 20px;
	font-size: 12px;
	font-weight: bold;
}

/* Sidebar */

#sidebar {
	float: left;
	width: 280px;
	padding: 0px;
	color: #787878;
}

#sidebar ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

#sidebar li {
	margin: 0;
	padding: 0;
}

#sidebar li ul {
	margin: 0px 0px;
	padding-bottom: 30px;
}

#sidebar li li {
	line-height: 35px;
	border-bottom: 1px dotted #E5E0C6;
	margin: 0px 30px;
	border-right: none;
}

#sidebar li a {
	padding-left: 10px;
	background: url(images/img03.gif) no-repeat left 5px;
}

#sidebar li li span {
	display: block;
	margin-top: -20px;
	padding: 0;
	font-size: 11px;
	font-style: italic;
}

#sidebar h2 {
	padding-left: 30px;
	padding-top: 6px;
	padding-bottom: 6px;
	background: #FC9D00;
	letter-spacing: -.5px;
	font-size: 1.8em;
	color: #FFFFFF;
}

#sidebar p {
	margin: 0 0px;
	padding: 10px 30px 20px 30px;
	text-align: justify;
}

#sidebar a {
	border: none;
	color: #898989;
}

#sidebar a:hover {
	text-decoration: underline;
	color: #6E6E6E;
}

/* Calendar */

#calendar {
}

#calendar_wrap {
	padding: 20px;
}

#calendar table {
	width: 100%;
}

#calendar tbody td {
	text-align: center;
}

#calendar #next {
	text-align: right;
}

/* Footer */

#footer {
	width: 940px;
	height: 50px;
	margin: 0 auto;
	padding: 0px 0 15px 0;
	border-top: 4px solid #EBE6D1;
	font-family: Arial, Helvetica, sans-serif;
}

#footer p {
	margin: 0;
	padding-top: 20px;
	line-height: normal;
	font-size: 10px;
	text-transform: uppercase;
	text-align: center;
	color: #444444;
}

#footer a {
	color: #464032;
}