(function(window,undefined){var document=window.document,setTimeout=window.setTimeout||setTimeout,clearTimeout=window.clearTimeout||clearTimeout,setInterval=window.setInterval||setInterval,History=window.History=window.History||{};if(typeof History.initHtml4!=="undefined"){throw new Error("History.js HTML4 Support has already been loaded...")}History.initHtml4=function(){if(typeof History.initHtml4.initialized!=="undefined"){return false}else{History.initHtml4.initialized=true}History.enabled=true;History.savedHashes=[];History.isLastHash=function(newHash){var oldHash=History.getHashByIndex(),isLast;isLast=newHash===oldHash;return isLast};History.saveHash=function(newHash){if(History.isLastHash(newHash)){return false}History.savedHashes.push(newHash);return true};History.getHashByIndex=function(index){var hash=null;if(typeof index==="undefined"){hash=History.savedHashes[History.savedHashes.length-1]}else{if(index<0){hash=History.savedHashes[History.savedHashes.length+index]}else{hash=History.savedHashes[index]}}return hash};History.discardedHashes={};History.discardedStates={};History.discardState=function(discardedState,forwardState,backState){var discardedStateHash=History.getHashByState(discardedState),discardObject;discardObject={discardedState:discardedState,backState:backState,forwardState:forwardState};History.discardedStates[discardedStateHash]=discardObject;return true};History.discardHash=function(discardedHash,forwardState,backState){var discardObject={discardedHash:discardedHash,backState:backState,forwardState:forwardState};History.discardedHashes[discardedHash]=discardObject;return true};History.discardedState=function(State){var StateHash=History.getHashByState(State),discarded;discarded=History.discardedStates[StateHash]||false;return discarded};History.discardedHash=function(hash){var discarded=History.discardedHashes[hash]||false;return discarded};History.recycleState=function(State){var StateHash=History.getHashByState(State);if(History.discardedState(State)){delete History.discardedStates[StateHash]}return true};if(History.emulated.hashChange){History.hashChangeInit=function(){History.checkerFunction=null;var lastDocumentHash="",iframeId,iframe,lastIframeHash,checkerRunning;if(History.isInternetExplorer()){iframeId="historyjs-iframe";iframe=document.createElement("iframe");iframe.setAttribute("id",iframeId);iframe.style.display="none";document.body.appendChild(iframe);iframe.contentWindow.document.open();iframe.contentWindow.document.close();lastIframeHash="";checkerRunning=false;History.checkerFunction=function(){if(checkerRunning){return false}checkerRunning=true;var documentHash=History.getHash()||"",iframeHash=History.unescapeHash(iframe.contentWindow.document.location.hash)||"";if(documentHash!==lastDocumentHash){lastDocumentHash=documentHash;if(iframeHash!==documentHash){lastIframeHash=iframeHash=documentHash;iframe.contentWindow.document.open();iframe.contentWindow.document.close();iframe.contentWindow.document.location.hash=History.escapeHash(documentHash)}History.Adapter.trigger(window,"hashchange")}else{if(iframeHash!==lastIframeHash){lastIframeHash=iframeHash;History.setHash(iframeHash,false)}}checkerRunning=false;return true}}else{History.checkerFunction=function(){var documentHash=History.getHash();if(documentHash!==lastDocumentHash){lastDocumentHash=documentHash;History.Adapter.trigger(window,"hashchange")}return true}}History.intervalList.push(setInterval(History.checkerFunction,History.options.hashChangeInterval));return true};History.Adapter.onDomLoad(History.hashChangeInit)}if(History.emulated.pushState){History.onHashChange=function(event){var currentUrl=((event&&event.newURL)||document.location.href),currentHash=History.getHashByUrl(currentUrl),currentState=null,currentStateHash=null,currentStateHashExits=null,discardObject;if(History.isLastHash(currentHash)){History.busy(false);return false}History.doubleCheckComplete();History.saveHash(currentHash);if(currentHash&&History.isTraditionalAnchor(currentHash)){History.Adapter.trigger(window,"anchorchange");History.busy(false);return false}currentState=History.extractState(History.getFullUrl(currentHash||document.location.href,false),true);if(History.isLastSavedState(currentState)){History.busy(false);return false}currentStateHash=History.getHashByState(currentState);discardObject=History.discardedState(currentState);if(discardObject){if(History.getHashByIndex(-2)===History.getHashByState(discardObject.forwardState)){History.back(false)}else{History.forward(false)}return false}History.pushState(currentState.data,currentState.title,currentState.url,false);return true};History.Adapter.bind(window,"hashchange",History.onHashChange);History.pushState=function(data,title,url,queue){if(History.getHashByUrl(url)){throw new Error("History.js does not support states with fragement-identifiers (hashes/anchors).")}if(queue!==false&&History.busy()){History.pushQueue({scope:History,callback:History.pushState,args:arguments,queue:queue});return false}History.busy(true);var newState=History.createStateObject(data,title,url),newStateHash=History.getHashByState(newState),oldState=History.getState(false),oldStateHash=History.getHashByState(oldState),html4Hash=History.getHash();History.storeState(newState);History.expectedStateId=newState.id;History.recycleState(newState);History.setTitle(newState);if(newStateHash===oldStateHash){History.busy(false);return false}if(newStateHash!==html4Hash&&newStateHash!==History.getShortUrl(document.location.href)){History.setHash(newStateHash,false);return false}History.saveState(newState);History.Adapter.trigger(window,"statechange");History.busy(false);return true};History.replaceState=function(data,title,url,queue){if(History.getHashByUrl(url)){throw new Error("History.js does not support states with fragement-identifiers (hashes/anchors).")}if(queue!==false&&History.busy()){History.pushQueue({scope:History,callback:History.replaceState,args:arguments,queue:queue});return false}History.busy(true);var newState=History.createStateObject(data,title,url),oldState=History.getState(false),previousState=History.getStateByIndex(-2);History.discardState(oldState,newState,previousState);History.pushState(newState.data,newState.title,newState.url,false);return true}}if(History.emulated.pushState){if(History.getHash()&&!History.emulated.hashChange){History.Adapter.onDomLoad(function(){History.Adapter.trigger(window,"hashchange")})}}};if(typeof History.init!=="undefined"){History.init()}})(window);