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- (function(e,t){"use strict";var n=e.document,r=e.setTimeout||r,i=e.clearTimeout||i,s=e.setInterval||s,o=e.History=e.History||{};if(typeof o.initHtml4!="undefined")throw new Error("History.js HTML4 Support has already been loaded...");o.initHtml4=function(){if(typeof o.initHtml4.initialized!="undefined")return!1;o.initHtml4.initialized=!0,o.enabled=!0,o.savedHashes=[],o.isLastHash=function(e){var t=o.getHashByIndex(),n;return n=e===t,n},o.isHashEqual=function(e,t){return e=encodeURIComponent(e).replace(/%25/g,"%"),t=encodeURIComponent(t).replace(/%25/g,"%"),e===t},o.saveHash=function(e){return o.isLastHash(e)?!1:(o.savedHashes.push(e),!0)},o.getHashByIndex=function(e){var t=null;return typeof e=="undefined"?t=o.savedHashes[o.savedHashes.length-1]:e<0?t=o.savedHashes[o.savedHashes.length+e]:t=o.savedHashes[e],t},o.discardedHashes={},o.discardedStates={},o.discardState=function(e,t,n){var r=o.getHashByState(e),i;return i={discardedState:e,backState:n,forwardState:t},o.discardedStates[r]=i,!0},o.discardHash=function(e,t,n){var r={discardedHash:e,backState:n,forwardState:t};return o.discardedHashes[e]=r,!0},o.discardedState=function(e){var t=o.getHashByState(e),n;return n=o.discardedStates[t]||!1,n},o.discardedHash=function(e){var t=o.discardedHashes[e]||!1;return t},o.recycleState=function(e){var t=o.getHashByState(e);return o.discardedState(e)&&delete o.discardedStates[t],!0},o.emulated.hashChange&&(o.hashChangeInit=function(){o.checkerFunction=null;var t="",r,i,u,a,f=Boolean(o.getHash());return o.isInternetExplorer()?(r="historyjs-iframe",i=n.createElement("iframe"),i.setAttribute("id",r),i.setAttribute("src","#"),i.style.display="none",n.body.appendChild(i),i.contentWindow.document.open(),i.contentWindow.document.close(),u="",a=!1,o.checkerFunction=function(){if(a)return!1;a=!0;var n=o.getHash(),r=o.getHash(i.contentWindow.document);return n!==t?(t=n,r!==n&&(u=r=n,i.contentWindow.document.open(),i.contentWindow.document.close(),i.contentWindow.document.location.hash=o.escapeHash(n)),o.Adapter.trigger(e,"hashchange")):r!==u&&(u=r,f&&r===""?o.back():o.setHash(r,!1)),a=!1,!0}):o.checkerFunction=function(){var n=o.getHash()||"";return n!==t&&(t=n,o.Adapter.trigger(e,"hashchange")),!0},o.intervalList.push(s(o.checkerFunction,o.options.hashChangeInterval)),!0},o.Adapter.onDomLoad(o.hashChangeInit)),o.emulated.pushState&&(o.onHashChange=function(t){var n=t&&t.newURL||o.getLocationHref(),r=o.getHashByUrl(n),i=null,s=null,u=null,a;return o.isLastHash(r)?(o.busy(!1),!1):(o.doubleCheckComplete(),o.saveHash(r),r&&o.isTraditionalAnchor(r)?(o.Adapter.trigger(e,"anchorchange"),o.busy(!1),!1):(i=o.extractState(o.getFullUrl(r||o.getLocationHref()),!0),o.isLastSavedState(i)?(o.busy(!1),!1):(s=o.getHashByState(i),a=o.discardedState(i),a?(o.getHashByIndex(-2)===o.getHashByState(a.forwardState)?o.back(!1):o.forward(!1),!1):(o.pushState(i.data,i.title,encodeURI(i.url),!1),!0))))},o.Adapter.bind(e,"hashchange",o.onHashChange),o.pushState=function(t,n,r,i){r=encodeURI(r).replace(/%25/g,"%");if(o.getHashByUrl(r))throw new Error("History.js does not support states with fragment-identifiers (hashes/anchors).");if(i!==!1&&o.busy())return o.pushQueue({scope:o,callback:o.pushState,args:arguments,queue:i}),!1;o.busy(!0);var s=o.createStateObject(t,n,r),u=o.getHashByState(s),a=o.getState(!1),f=o.getHashByState(a),l=o.getHash(),c=o.expectedStateId==s.id;return o.storeState(s),o.expectedStateId=s.id,o.recycleState(s),o.setTitle(s),u===f?(o.busy(!1),!1):(o.saveState(s),c||o.Adapter.trigger(e,"statechange"),!o.isHashEqual(u,l)&&!o.isHashEqual(u,o.getShortUrl(o.getLocationHref()))&&o.setHash(u,!1),o.busy(!1),!0)},o.replaceState=function(t,n,r,i){r=encodeURI(r).replace(/%25/g,"%");if(o.getHashByUrl(r))throw new Error("History.js does not support states with fragment-identifiers (hashes/anchors).");if(i!==!1&&o.busy())return o.pushQueue({scope:o,callback:o.replaceState,args:arguments,queue:i}),!1;o.busy(!0);var s=o.createStateObject(t,n,r),u=o.getHashByState(s),a=o.getState(!1),f=o.getHashByState(a),l=o.getStateByIndex(-2);return o.discardState(a,s,l),u===f?(o.storeState(s),o.expectedStateId=s.id,o.recycleState(s),o.setTitle(s),o.saveState(s),o.Adapter.trigger(e,"statechange"),o.busy(!1)):o.pushState(s.data,s.title,s.url,!1),!0}),o.emulated.pushState&&o.getHash()&&!o.emulated.hashChange&&o.Adapter.onDomLoad(function(){o.Adapter.trigger(e,"hashchange")})},typeof o.init!="undefined"&&o.init()})(window)
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