Because the width of the table that contains the header is set to <table border="0"
width="76%">
Contained in a div with no width setting
The width of the main table is set to:
<table border="2" width="109%" cellpadding="6" cellspacing="0" bordercolorlight="#EEECA4"
bordercolordark="#EEECA4">
Contained in a div set to:
<div style="position: absolute; left: 12px; top: 175px; width: 683px; height: 549px">
