How do I change the content but not the tab with Spry Tabbed Panels?

Question

My understanding is that you want to create pages inside a tabbed panel. The solution can be: creating another Spry Tabbed Panel inside the Spry Tabbed Panel.

EDITED with sample Links: Here's the source code:

<body>
<div id="TabbedPanels1" class="TabbedPanels">
  <ul class="TabbedPanelsTabGroup">
    <li class="TabbedPanelsTab" tabindex="0">Main Tab 1</li>
    <li class="TabbedPanelsTab" tabindex="0">Main Tab 2</li>
    <li class="TabbedPanelsTab" tabindex="0">Main Tab 3</li>
  </ul>
  <div class="TabbedPanelsContentGroup">
    <div class="TabbedPanelsContent">Main Content 1</div>
    <div class="TabbedPanelsContent">Main Content 2
      <div id="TabbedPanels2" class="VTabbedPanels">
        <ul class="TabbedPanelsTabGroup">
          <li class="TabbedPanelsTab" tabindex="0">Sub Tab 1</li>
          <li class="TabbedPanelsTab" tabindex="0">Sub Tab 2</li>
        </ul>
        <div class="TabbedPanelsContentGroup">
          <div class="TabbedPanelsContent">Sub Content 1
              <li><a href="#">Link here</a></li>
              <li><a href="#">Link here</a></li>
              <li><a href="#" onclick="TabbedPanels2.showPanel(1); return false;">Go to Menu 2</a></li>
             </div>
          <div class="TabbedPanelsContent">Sub Content 2</div>
        </div>
      </div>
    </div>
    <div class="TabbedPanelsContent">Main Content 3</div>
  </div>
</div>
<script type="text/javascript">
var TabbedPanels1 = new Spry.Widget.TabbedPanels("TabbedPanels1");
var TabbedPanels2 = new Spry.Widget.TabbedPanels("TabbedPanels2");
</script>
</body>

And in your CSS, add this:

.VTabbedPanels .TabbedPanelsTabGroup {
    display: none;
}

Now, the tab inside the tabbed panel is hidden. Only the content is shown.

Also, add this to widen the width of your panel content's content:

.VTabbedPanels .TabbedPanelsContentGroup {
    width: 99%;
    height: 100%;
    border: 0;
}

NOTES:

For:

<a href="#" onclick="TabbedPanels2.showPanel(1); return false;">Go to Menu 2</a>

showPanel(0) - 1st tab; showPanel(1) - 2nd tab, and so forth.