If you change
Code:
<div align="center">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="0" border="0" width="100%" align="center" style="border-top-width:1px">
to
Code:
<div class="tborder" style="padding:$stylevar[cellspacing]px; border-bottom-width:0px">
<table cellpadding="0" cellspacing="0" border="0" width="100%" align="center">
you'll get rid of that nasty little border issue you've got on the top navbar