Menu created using rollover images has anomoly once transferred to WP

I’m really struggling to figure out why this white line appears on my navigation bar. I built my header/nav from images using dreamweaver and it looks great when I test it live in Dream weaver but once I transfer it to WP I get this gap between the nav buttons and the tagline in the header. If you click on any of the buttons it will take you to the original site and you can see what it is suppose to look like.

You can see what I’m working with at:

http://ahshearing.com/articles/

Any help would be appreciated. Trying to meet a deadline for getting the blog together.