I built a plugin for my company's customers and one of the options uses an iframe. A customer pointed out an interesting issue to me. When the page loads, it doesn't load at the top but loads just above the iframe (please see: http://salondshayn.com/wp/staff/jude-hair-stylist-hairdresser-scottsdale/). The same thing happens on my test site, and in all browsers I've tested (chrome, i.e. and firefox).
I've narrowed it down to the iframe, but I have no idea how to fix this. The closest thing I've found is this article, but the only fix it offers is to not use an iframe. http://wordpress.org/support/topic/pages-react-as-if-theres-an-anchor-in-firefox?replies=9#post-1347129