mathiasbynens/jquery-placeholder — pull request #87 by brennanmceachran (2012-08-07 16:04:07+00:00)
Title: IE9 Unspecified Error Fix

IE9 has throws "unspecified error" with document.activeElement when inside of an iframe.
JQuery mobile wraps in empty try/catch to "fix" https://github.com/jquery/jquery-mobile/issues/2064