Anchor Link Missing Header

I have anchor links used widely in my site. When those anchor are being linked within the same page, the link works fine everytime. My problem is when a link is created to direct the browser to a different page and to a specific anchor on the page. For about two thirds of the instances I use this type of link it works fine. The other third, the link appears to work fine as it takes the browser to the correct location, but if the user scrolls back to the top of the page, all or parts of the header will be cut off. I’ve tried to find differences between the working pages and the pages that have the bug, and have had no luck. I have noticed that however much of the page is being cut off of the top, that amount of space is added to bottom of the page in extra space after the footer.

Here is an example of an anchor link that works properly,
http://www.sitinvest2.com/simple-ira-2/#employeecontributions

Here is an example of an anchor link that doesn’t work,
http://www.sitinvest2.com/ugmautma/#taxrules

Any help would be appreciated.