zk.historystate=function(){var a="state"in window.history,b=location.href;return{enabled:!0,onPopState:function(c){var d=!a&&location.href==b;a=!0;d||(zAu.send(new zk.Event(null,"onHistoryPopState",{state:c.state,url:location.href},{implicit:!0}),1),zk.bmk.checkBookmark&&zk.bmk.checkBookmark())},register:function(){zk.historystate.enabled&&window.addEventListener("popstate",this.onPopState)}}}();zk._apac(function(){zk.historystate.register()});
