piwik manager system dashboard has js error in firefox (no replies)

when i see the demo in piwik network "http://demo.piwik.org/index.php?module=CoreHome&action=index&idSite=7&period=day&date=yesterday#/module=VisitsSummary&action=index&idSite=7&period=day&date=yesterday".

In the DashBoard page with fire fox, the fire bug has report errors like " TypeError: $(...).on(...).dashboard is not a function".