Hi t0mt0mboy, and welcome!
Here's a solution that uses cookies to retain the selected tab ID between form posts:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<!-- This page is copyright Elated Communications Ltd. (www.elated.com) -->
<title>JavaScript tabs example</title>
<style type="text/css">
body { font-size: 80%; font-family: 'Lucida Grande', Verdana, Arial, Sans-Serif; }
ul#tabs { list-style-type: none; margin: 30px 0 0 0; padding: 0 0 0.3em 0; }
ul#tabs li { display: inline; }
ul#tabs li a { color: #42454a; background-color: #dedbde; border: 1px solid #c9c3ba; border-bottom: none; padding: 0.3em; text-decoration: none; }
ul#tabs li a:hover { background-color: #f1f0ee; }
ul#tabs li a.selected { color: #000; background-color: #f1f0ee; font-weight: bold; padding: 0.7em 0.3em 0.38em 0.3em; }
div.tabContent { border: 1px solid #c9c3ba; padding: 0.5em; background-color: #f1f0ee; }
div.tabContent.hide { display: none; }
</style>
<script type="text/javascript">
//<![CDATA[
var tabLinks = new Array();
var contentDivs = new Array();
function init() {
// Grab the tab links and content divs from the page
var tabListItems = document.getElementById('tabs').childNodes;
for ( var i = 0; i < tabListItems.length; i++ ) {
if ( tabListItems[i].nodeName == "LI" ) {
var tabLink = getFirstChildWithTagName( tabListItems[i], 'A' );
var id = getHash( tabLink.getAttribute('href') );
tabLinks[id] = tabLink;
contentDivs[id] = document.getElementById( id );
}
}
// Assign onclick events to the tab links, and
// highlight the first tab
var i = 0;
for ( var id in tabLinks ) {
tabLinks[id].onclick = showTab;
tabLinks[id].onfocus = function() { this.blur() };
if ( i == 0 ) tabLinks[id].className = 'selected';
i++;
}
// Hide all content divs except the first
var i = 0;
for ( var id in contentDivs ) {
if ( i != 0 ) contentDivs[id].className = 'tabContent hide';
i++;
}
// If a hash was supplied in the page URL,
// display the corresponding tab (if found)
if ( document.location.hash ) showTab( document.location.hash.substring(1) );
// If a selectedTab cookie was set, select the appropriate tab
if ( selectedId = getCookie( "selectedTab" ) ) showTab( selectedId );
}
function showTab( selectedId ) {
if ( typeof selectedId != 'string' ) var selectedId = getHash( this.getAttribute('href') );
setCookie( "selectedTab", selectedId );
// Highlight the selected tab, and dim all others.
// Also show the selected content div, and hide all others.
for ( var id in contentDivs ) {
if ( id == selectedId ) {
tabLinks[id].className = 'selected';
contentDivs[id].className = 'tabContent';
} else {
tabLinks[id].className = '';
contentDivs[id].className = 'tabContent hide';
}
}
// Stop the browser following the link
return false;
}
function getFirstChildWithTagName( element, tagName ) {
for ( var i = 0; i < element.childNodes.length; i++ ) {
if ( element.childNodes[i].nodeName == tagName ) return element.childNodes[i];
}
}
function getHash( url ) {
var hashPos = url.lastIndexOf ( '#' );
return url.substring( hashPos + 1 );
}
function setCookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure )
{
var cookie_string = name + "=" + escape ( value );
if ( exp_y )
{
var expires = new Date ( exp_y, exp_m, exp_d );
cookie_string += "; expires=" + expires.toGMTString();
}
if ( path )
cookie_string += "; path=" + escape ( path );
if ( domain )
cookie_string += "; domain=" + escape ( domain );
if ( secure )
cookie_string += "; secure";
document.cookie = cookie_string;
}
function getCookie ( cookie_name )
{
var results = document.cookie.match ( '(^|;) ?' + cookie_name + '=([^;]*)(;|$)' );
if ( results )
return ( unescape ( results[2] ) );
else
return null;
}
//]]>
</script>
</head>
<body onload="init()">
<h1>JavaScript tabs example</h1>
<ul id="tabs">
<li><a href="#about">About JavaScript tabs</a></li>
<li><a href="#advantages">Advantages of tabs</a></li>
<li><a href="#usage">Using tabs</a></li>
</ul>
<div class="tabContent" id="about">
<h2>About JavaScript tabs</h2>
<div>
<p>JavaScript tabs partition your Web page content into tabbed sections. Only one section at a time is visible.</p>
<p>The code is written in such a way that the page degrades gracefully in browsers that don't support JavaScript or CSS.</p>
</div>
</div>
<div class="tabContent" id="advantages">
<h2>Advantages of tabs</h2>
<div>
<p>JavaScript tabs are great if your Web page contains a large amount of content.</p>
<p>They're also good for things like multi-step Web forms.</p>
</div>
</div>
<div class="tabContent" id="usage">
<h2>Using tabs</h2>
<div>
<p>Click a tab to view the tab's content. Using tabs couldn't be easier!</p>
</div>
</div>
<p><a href="/articles/javascript-tabs/">Return to the JavaScript Tabs article</a></p>
<form method="post" action="">
<div>
<input type="submit" name="send" value="Send Form"/>
</div>
</form>
</body>
</html>
Does that help?
Matt
--
Matt Doyle, Elated
3rd Edition of my jQuery Mobile book out now! Learn to build mobile web apps. Free sample chapter: http://store.elated.com/ 
