Chrome Rendering Issue - Wordpress Theme

I am having an issue with my WordPress Theme. It has stopped rendering properly in Chrome. It renders perfectly in IE (7,8), Firefox, Safari and Opera. The problem seems to be that something is shifting the menu bar slightly, which causes the main page and sidebar to shift. The right sidebar is pushed off the page and displays below the main text.

The site is [url removed, login to view] and it is using the latest release of WordPress.

This theme was generated using Artisteer and has (until a few months ago) been rendering just fine in Chrome. Not sure what the new problem is.

Using "Inspect Element" in Chrome, I can actually remove (what appears to be) a hidden element with a link to the home page in the "art-menu" class (it appears directly to the left of the "Home" button. However, this code appears to be generated in my Header file using a php function called "art_menu_items". This is where I'm out of my element in terms of troubleshooting.

What I need is:

1. A fix to this issue so that Chrome renders properly (using the correct rendering in one of the other browsers as a guide).

2. To ensure that any updates to the theme/functions/css do not change the rendering of any of the other browsers listed above.

3. Cause no other errors/issues with the site functionality.

4. An itemized description of what was changed in code/theme so that I can understand what went wrong originally.

I have attached the theme files as part of this project. If you require any other files (images, etc), please indicate this.

Thanks,

Note: This is a bug fix I'm looking for, not significant development work.

CSS PHP Website Design WordPress

Project ID: #922440

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