This Website is tested to work properly on IE9 version and newer.
In October 2013, Princeton University upgraded all computers from IE8 to IE9. But the browser´s default is set at: Browser Mode: IE9 and Document Mode: Internet Explorer 7 standards. However, for this Website to work properly, the Document Mode: should be set to Internet Explorer 9 standards.
In other words, by setting the Document Mode: to IE7 standards the IE browser behaves as if it is version7. Document modes are deprecated.
WHAT YOU NEED TO DO:
In your Internet Explorer browser, go to Tools (Alt +x) then go to F12 developer tools. In F12 developer tools, at the bottom of the screen, make sure to set the Document Mode: to Internet Explorer 9 standards. See image below:
Update: On 8/1/2014: added code to this Website to force Internet Explorer (IE10 and older) to set the document mode to the newest standards available for the browser. However, if this does not work in your case, then you can change the settings manually.