Hi,
Change your list structure so that the sub ul is contained within a parent list tag like so.
Code:
<div id="header"> </div>
<div id="mainnav">
<div id="navlist">
<ul id="nav">
<li id="current"><a href="#">Main</a></li>
<li><a href="../calendar/month.php">Calendar</a></li>
<li><a href="../events.php">Events</a></li>
<li><a href="../links.php">Links</a></li>
<li><a href="">Performers</a>
<ul>
<li><a href="/missy/">Missy</a></li>
<li><a href="/steviehall/">Stevie Hall</a></li>
<li><a href="/twebb.php">Tommy Webb</a></li>
<li><a href="/tge/">True Gospel Echoes</a></li>
</ul>
</li>
</ul>
<div class="clearer"></div>
</div>
</div>
<div id="sidebar">
Note that a nested ul must be contained within the parent li .e.g. <li> <ul><li></li></ul></li>. In your original code you have the nested list outside a parent list which is invalid and won't work.
Next add the js to your page:
Code:
<script type="text/javascript"><!--//--><![CDATA[//><!--
sfHover = function() {
var sfEls = document.getElementById("nav").getElementsByTagName("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" over";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp(" over\\b"), "");
}
}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
//--><!]]></script>
Add an identifier to the main ul so the js can find it.
Code:
<div id="mainnav">
<div id="navlist">
<ul id="nav">
<li id="current"><a href="#">Main</a></li>
Next add the submenu code to display the menu on hover:
Code:
/* sub menu styling */
#navlist ul ul{
display:none;/* hide submenu */
position:absolute;/* remove it from the flow so it can overlap */
left:-10px;
top:1.4em;
width:13em;
}
#navlist ul ul li{float:none;}
#navlist ul ul li a{float:none;}
/* mac hide \*/
* html #navlist ul ul li,
* html #navlist ul ul li a {height:1%}
/* end hide */
#mainnav ul li:hover ul,#mainnav ul li.over ul {/* make sub menu appear */
display: block;
}
That should do what you want with any luck 
heres the whole page with the css in the head (although the message board may corrupt the links and anchors).
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Bluegrass Mountain, Bluegrass, glospel and country music from the mountain states.</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript"><!--//--><![CDATA[//><!--
sfHover = function() {
var sfEls = document.getElementById("nav").getElementsByTagName("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" over";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp(" over\\b"), "");
}
}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
//--><!]]></script>
<style type="text/css">
* {margin:0;padding:0}/* clear the decks */
/* commented backslash hack v2 \*/
html, body{height:100%;}
/* end hack */
html,body {
margin-top: 20px;
margin-bottom:20px;
padding: 0;
}
body {
margin-top: 20px;
margin-bottom:20px;
font: small arial, hevetica, sans-serif;
text-align: center;
color: black;
background-color: black;
}
#container {
margin-left:auto;
margin-right:auto;
width: 760px;
min-height:100%;
text-align: left;
background: white;
border-left: 1px solid #5b9ecb;
border-right: 1px solid #5b9ecb;
position:relative;
}
/* commented backslash hack v2 \*/
* html #container {height:100%;}
* html #container {width:762px;w\idth:760px;}
* html body{font-size:x-small;f\ont-size:small;}
/* end hack */
.clearer{
height:1px;
overflow:hidden;
margin-top:-1px;
clear:both;
}
#mainheader {
position:absolute;
left:0;top:0;
height: 160px;
width:100%;
background-color: #fff;
border-bottom: 1px solid #5b9ecb;
z-index:1;
}
#header {
text-align:center;
height: 125px;
width:100%;
background: black url("http://www.bluegrassmountain.com/images/bg1bkg.jpg") no-repeat center center;
border-top: 1px solid #5b9ecb;
border-bottom: 1px solid #5b9ecb;
position:relative;
z-index:2;
overflow:hidden;
}
* html #mainheader {height:161px;he\ight:160px}
* html #header {height:127px;he\ight:127px}
#mainnav {
width:100%;
height: 40px;
margin:0;
background-color: #f5f5f5;
position:relative;
z-index:2;
}
#navlist {
position: relative;
background: url("http://www.bluegrassmountain.com/images/bg.gif") repeat-x bottom;
font-size:85%;
line-height:normal;
}
#navlist ul {
margin:0;
padding:10px 10px 0;
list-style-type:none;
}
#navlist li {
float:left;
background:url("http://www.bluegrassmountain.com/images/right.gif") no-repeat right top;
margin:0;
padding:0 5px 0 0;
z-index:4;position:relative;
}
#navlist a {
float:left;
display:block;
background:url("http://www.bluegrassmountain.com/images/left.gif") no-repeat left top;
padding:5px 7px 4px 20px;
text-decoration:none;
font-weight:bold;
color:#9cf;
}
/* Commented Backslash Hack
hides rule from IE5-Mac \*/
#navlist a {float:none;}
/* End IE5-Mac hack */
#navlist a:hover {
color:#fff;
}
#navlist #current {
background-image:url("http://www.bluegrassmountain.com/images/right_on.gif");
}
#navlist #current a {
background-image:url("http://www.bluegrassmountain.com/images/left_on.gif");
color:#333;
padding-bottom:5px;
}
* html #mainnav{height:42px;he\ight:40px}
/* sub menu styling */
#navlist ul ul{
display:none;/* hide submenu */
position:absolute;/* remove it from the flow so it can overlap */
left:-10px;
top:1.4em;
width:13em;
}
#navlist ul ul li{float:none;}
#navlist ul ul li a{float:none;}
/* mac hide \*/
* html #navlist ul ul li,
* html #navlist ul ul li a {height:1%}
/* end hide */
#mainnav ul li:hover ul,#mainnav ul li.over ul {/* make sub menu appear */
display: block;
}
#sidebar {
border-left: 1px solid #5b9ecb;
background-color:#5b9ecb;
min-height:40%;
text-align:center;
float: right;
width: 150px;
padding:10px 0;
}
* html #sidebar {height:40%}
/* mac hide \*/
* html #sidebar {height:40%}
/* end hide*/
#content {
/*width: 573px;*/
padding:5px 0 ;
}
#content p, #sidebar p, #mainnav p, #header p,#footer p {margin:5px 5px 5px 5px;}
#content h1 {
text-align:center;
margin:5px;
padding:5px;
font: x-large;
color: blue;
}
#footer {
position:absolute;
bottom:0;
width:100%;
height: 34px;
background-color: #f5f5f5;
border-top: 1px solid #5b9ecb;
font: small arial, hevetica, sans-serif;
text-align: center;
}
#footer a:link {
padding: 5px 10px 5px 10px;
font-size: x-small;
color: blue;
}
#footer a:visited {
padding: 5px 10px 5px 10px;
font-size: x-small;
color: black;
}
#footer a:active {
padding: 5px 10px 5px 10px;
background-color:#5b9ecb;
color: black;
border: 2px inset;
font-size: x-small;
font-weight:bold;
}
#footer a:hover {
padding: 5px 10px 5px 10px;
background-color:blue;
color: white;
border: 2px outset;
font-size: x-small;
font-weight:bold;
}
#footer p {margin:0;padding:0}
* html #footer {height:35px;he\ight:34px;}
.divider1 {
width:100%;
height:1px;
overflow:hidden;
background:transparent;
position:relative;
border-bottom: 1px solid #5b9ecb;
}
#clearfooter {height:27px;width:100%;clear:both}
.blank , .blank2 {
position:absolute;
left:547px;
width:2px;
height:0px;
overflow:hidden;
border-top: 1px solid #5b9ecb;
}
.blank {top:-1px;}
.blank2 {bottom:-1px; border-top:1px solid #5b9ecb;
}
span.Q {
margin: 8px;
padding:5px;
font-size:x-large;
font-weight: bold;
color:#5b9ecb;
}
span.A {
margin: 8px;
padding:5px;
font-size:x-large;
font-weight: bold;
color:blue;
}
</style>
/head>
<body>
<div id="container">
<div id="mainheader">
<!--<div class="blank2"></div>-->
<!-- for decoration only -->
</div>
<div id="header"> </div>
<div id="mainnav">
<div id="navlist">
<ul id="nav">
<li id="current"><a href="#">Main</a></li>
<li><a href="../calendar/month.php">Calendar</a></li>
<li><a href="../events.php">Events</a></li>
<li><a href="../links.php">Links</a></li>
<li><a href="">Performers</a>
<ul>
<li><a href="/missy/">Missy</a></li>
<li><a href="/steviehall/">Stevie Hall</a></li>
<li><a href="/twebb.php">Tommy Webb</a></li>
<li><a href="/tge/">True Gospel Echoes</a></li>
</ul>
</li>
</ul>
<div class="clearer"></div>
</div>
</div>
<div id="sidebar">
<p>Bands</p>
</div>
<div id="content">
<p>Footer stays at the bottom of the window unless the content is longer then it stays at the bottom of the document.</p>
<p>Footer stays at the bottom of the window unless the content is longer then it stays at the bottom of the document.</p>
</div>
<div id="clearfooter"></div>
<!-- to clear footer -->
<div id="footer">
<div class="divider1"></div>
<div class="blank"></div>
<!-- for decoration only -->
<a href="refund.php">Refunds</a> | <a href="faq.php">F.A.Q.</a> | <a href="contact.php">Contact Us</a> </div>
</div>
</body>
</html>
z-indexes are need to control the stacking order of positioned elements and if a parent has a z-index set then you may need to control where elements overlap.
http://www.aplus.co.yu/css/z-pos/
Bookmarks