Internet Explorer anchor links issue

Hi all. I am baffled by an Internet Explorer anchor links issue on a new website I am developing. The HOME page is a scrolling parallax-style page, but there are links to sub-pages, too.

Here is the URL to the development site – http://esacinc.com/wp/

If you click on the “Who We Are”, “Our Services” or “Our Work” links on the HOME page, the page scrolls down nicely to that section. Also, if you are on one of the sub-pages and click one of those three links in the top nav, you go back to the HOME page and jump down to the appropriate section perfectly – in all browsers EXCEPT Internet Explorer. In Internet Explorer you end up in some random spot half-way down the page. The odd wrinkle is, if you enter the URL with the anchor tag directly into your browser address bar like this – http://esacinc.com/wp/#services – Internet Explorer takes you exactly where you’re supposed to go on the page – but the sub-page nav link, which is exactly the same link, pops you to that random spot on the HOME page. Any ideas?