1) Additional information:

I viewed the source from the pages displayed when the browser opens vs the page that displayed after clicking Home on the menu. The following displays as not being in the first page:

1 - right below the Body tag this shows in a div tag in the second file. In the first file this is not included.

<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />

2 - right below that is the following in the second file and nothing in the first:

<script type="text/javascript">
<!--
var theForm = document.forms['Form'];
if (!theForm) {
    theForm = document.Form;
}
function __doPostBack(eventTarget, eventArgument) {
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
    }
}
// -->
</script>

<script src="/WebResource.axd?d=m2t1UESPyA8u8PM331wbZQ2&amp;t=633196748802366178" type="text/javascript"></script>

3 - the following is in the second file and not the first:

//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('ScriptManager', document.getElementById('Form'));
Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);
//]]>