Is there a way to change the default dimensions for WordPress Custom Header application? The theme that I chose to use had a default header image size of 774x120 which was the full width of the site. I thought this was too small so I went in to the css file and adjusted the page size to 900px wide instead.
I was able to tweek the header in the css to 900x160 and manually entered a link to an image of that size
background: url(http://localhost/wordpress/wp-content/uploads/2011/05/header.png) top center no-repeat;
border: 0px #fff solid;
But the wp header wont let me upload an image no bigger than the defaulted size 774x120. I also tried taking the this line of code out of the header.php
<?php wp_head(); ?>
which allowed the custom css header to show through but I ended up having the extra code at the bottom of the page of where the wp dashboard menu should be.
Is there a way to modify the wordpress header application so that my header stretches all the way across?
Thanks in advance