Hi,

I visited your page in IE11(win7) latest update from yesterday, but could not reproduce the issue. I run with Tracking Protection on and Toolbars and BHO's disabled.... you have some google content on that page...

the first step in troubleshooting browser issues is to test in noAddons mode.

try

Internet Options>Advanced tab, check "enable smooth scrolling"

If that does not fix the issue...

Test in noAddons mode....Test with Tracking Protection turned on (and blocking google analyitics. (ga.js)

You are using old versions of jquery and jquery plugins, that use UAS sniffing instead of feature testing... consider updating jquery...

Additionally your page does not validate and uses the depreciated align attribute (50 times)

Rob^_^