nl_tokens: This only supports pushState for the browsers with native pushState support . For other browsers ( mainly IE8 and IE9 ) it will refresh the page upon pushState () and replaceState () .
pl_tokens: function History ( options ) { this . win = ( options && options . win ) || window ; this . _hasPushState = ! ! ( this . win && this . win . <mask> && this . win . history . pushState ) ; }