In the Safari browser your header image gets repeated multiple times stacked next to each other horizontally.
In your source code the image is inside a table spec'd at 1048% wide, which may be causing that to happen.
Code:
<table width="1048%" height="200" border="0" align="center" cellpadding="0" cellspacing="0">
<tr class="topbar">
<td width="1071" height="115" valign="top" background="rectangle_page2_files/nastyx.jpg"> </td>
HTH