Joomla: Remove header mask

You will find the mask image in style.css, around line 6:
Code:
.ja-headermask {
background:transparent url(images/header-mask.png) no-repeat scroll right top;
}

when you take that out, this takes over:
Code:
.ja-headermask {
background:transparent url(../images/header-mask.png) no-repeat scroll right top;
}

so you will have to take this out also - in template.css, around line 935

Hope this helps.
http://forum.joomla.org/viewtopic.php?p=1640566