window.dhtmlHistory={isIE:false,isOpera:false,isSafari:false,isKonquerer:false,isGecko:false,isSupported:false,create:function(options){var that=this;var UA=navigator.userAgent.toLowerCase();var platform=navigator.platform.toLowerCase();var vendor=navigator.vendor||"";if(vendor==="KDE"){this.isKonqueror=true;this.isSupported=false;}else if(typeof window.opera!=="undefined"){this.isOpera=true;this.isSupported=true;}else if(typeof document.all!=="undefined"){this.isIE=true;this.isSupported=true;}else if(vendor.indexOf("Apple Computer, Inc.")>-1){this.isSafari=true;this.isSupported=(platform.indexOf("mac")>-1);this.isSafari=false;this.isIE=true;this.isSupported=true;}else if(UA.indexOf("gecko")!=-1){this.isGecko=true;this.isSupported=true;}
window.historyStorage.setup(options);if(this.isSafari){this.createSafari();}else if(this.isOpera){this.createOpera();}
var initialHash=this.getCurrentLocation();this.currentLocation=initialHash;if(this.isIE){this.createIE(initialHash);}
var unloadHandler=function(){that.firstLoad=null;};this.addEventListener(window,'unload',unloadHandler);if(this.isIE){this.ignoreLocationChange=true;}else{if(!historyStorage.hasKey(this.PAGELOADEDSTRING)){this.ignoreLocationChange=true;this.firstLoad=true;historyStorage.put(this.PAGELOADEDSTRING,true);}else{this.ignoreLocationChange=false;this.fireOnNewListener=true;}}
var locationHandler=function(){that.checkLocation();};setInterval(locationHandler,100);},initialize:function(){if(this.isIE){if(!historyStorage.hasKey(this.PAGELOADEDSTRING)){this.fireOnNewListener=false;this.firstLoad=true;historyStorage.put(this.PAGELOADEDSTRING,true);}
else{this.fireOnNewListener=true;this.firstLoad=false;}}},addListener:function(listener){this.listener=listener;if(this.fireOnNewListener){this.fireHistoryEvent(this.currentLocation);this.fireOnNewListener=false;}},addEventListener:function(o,e,l){if(o.addEventListener){o.addEventListener(e,l,false);}else if(o.attachEvent){o.attachEvent('on'+e,function(){l(window.event);});}},add:function(newLocation,historyData){if(this.isSafari){newLocation=this.removeHash(newLocation);historyStorage.put(newLocation,historyData);this.currentLocation=newLocation;window.location.hash=newLocation;this.putSafariState(newLocation);}else{var that=this;var addImpl=function(){if(that.currentWaitTime>0){that.currentWaitTime=that.currentWaitTime-that.waitTime;}
newLocation=that.removeHash(newLocation);if(document.getElementById(newLocation)&&that.debugMode){var e="Exception: History locations can not have the same value as _any_ IDs that might be in the document,"
+" due to a bug in IE; please ask the developer to choose a history location that does not match any HTML"
+" IDs in this document. The following ID is already taken and cannot be a location: "+newLocation;throw new Error(e);}
historyStorage.put(newLocation,historyData);that.ignoreLocationChange=true;that.ieAtomicLocationChange=true;that.currentLocation=newLocation;window.location.hash=newLocation;if(that.isIE){that.iframe.src="blank.html?"+newLocation;}
that.ieAtomicLocationChange=false;};window.setTimeout(addImpl,this.currentWaitTime);this.currentWaitTime=this.currentWaitTime+this.waitTime;}},isFirstLoad:function(){return this.firstLoad;},getVersion:function(){return"0.6";},getCurrentLocation:function(){var r=(this.isSafari?this.getSafariState():this.getCurrentHash());return r;},getCurrentHash:function(){var r=window.location.href;var i=r.indexOf("#");return(i>=0?r.substr(i+1):"");},PAGELOADEDSTRING:"DhtmlHistory_pageLoaded",listener:null,waitTime:200,currentWaitTime:0,currentLocation:null,iframe:null,safariHistoryStartPoint:null,safariStack:null,safariLength:null,ignoreLocationChange:null,fireOnNewListener:null,firstLoad:null,ieAtomicLocationChange:null,createIE:function(initialHash){this.waitTime=400;var styles=(historyStorage.debugMode?'width: 800px;height:80px;border:1px solid black;':historyStorage.hideStyles);var iframeID="rshHistoryFrame";var iframeHTML='<iframe frameborder="0" id="'+iframeID+'" style="'+styles+'" src="blank.html?'+initialHash+'"></iframe>';document.write(iframeHTML);this.iframe=document.getElementById(iframeID);},createOpera:function(){this.waitTime=400;var imgHTML='<img src="javascript:location.href=\'javascript:dhtmlHistory.checkLocation();\';" style="'+historyStorage.hideStyles+'" />';document.write(imgHTML);},createSafari:function(){var formID="rshSafariForm";var stackID="rshSafariStack";var lengthID="rshSafariLength";var formStyles=historyStorage.debugMode?historyStorage.showStyles:historyStorage.hideStyles;var inputStyles=(historyStorage.debugMode?'width:800px;height:20px;border:1px solid black;margin:0;padding:0;':historyStorage.hideStyles);var safariHTML='<form id="'+formID+'" style="'+formStyles+'">'
+'<input type="text" style="'+inputStyles+'" id="'+stackID+'" value="[]"/>'
+'<input type="text" style="'+inputStyles+'" id="'+lengthID+'" value=""/>'
+'</form>';document.write(safariHTML);this.safariStack=document.getElementById(stackID);this.safariLength=document.getElementById(lengthID);if(!historyStorage.hasKey(this.PAGELOADEDSTRING)){this.safariHistoryStartPoint=history.length;this.safariLength.value=this.safariHistoryStartPoint;}else{this.safariHistoryStartPoint=this.safariLength.value;}},getSafariStack:function(){var r=this.safariStack.value;return historyStorage.fromJSON(r);},getSafariState:function(){var stack=this.getSafariStack();var state=stack[history.length-this.safariHistoryStartPoint-1];return state;},putSafariState:function(newLocation){var stack=this.getSafariStack();stack[history.length-this.safariHistoryStartPoint]=newLocation;this.safariStack.value=historyStorage.toJSON(stack);},fireHistoryEvent:function(newHash){var historyData=historyStorage.get(newHash);this.listener.call(null,newHash,historyData);},checkLocation:function(){if(!this.isIE&&this.ignoreLocationChange){this.ignoreLocationChange=false;return;}
if(!this.isIE&&this.ieAtomicLocationChange){return;}
var hash=this.getCurrentLocation();if(hash==this.currentLocation){return;}
this.ieAtomicLocationChange=true;if(this.isIE&&this.getIframeHash()!=hash){this.iframe.src="blank.html?"+hash;}
else if(this.isIE){return;}
this.currentLocation=hash;this.ieAtomicLocationChange=false;this.fireHistoryEvent(hash);},getIframeHash:function(){var doc=this.iframe.contentWindow.document;var hash=String(doc.location.search);if(hash.length==1&&hash.charAt(0)=="?"){hash="";}
else if(hash.length>=2&&hash.charAt(0)=="?"){hash=hash.substring(1);}
return hash;},removeHash:function(hashValue){var r;if(hashValue===null||hashValue===undefined){r=null;}
else if(hashValue===""){r="";}
else if(hashValue.length==1&&hashValue.charAt(0)=="#"){r="";}
else if(hashValue.length>1&&hashValue.charAt(0)=="#"){r=hashValue.substring(1);}
else{r=hashValue;}
return r;},iframeLoaded:function(newLocation){if(this.ignoreLocationChange){this.ignoreLocationChange=false;return;}
var hash=String(newLocation.search);if(hash.length==1&&hash.charAt(0)=="?"){hash="";}
else if(hash.length>=2&&hash.charAt(0)=="?"){hash=hash.substring(1);}
window.location.hash=hash;this.fireHistoryEvent(hash);}};window.historyStorage={setup:function(options){if(typeof options!=="undefined"){if(options.debugMode){this.debugMode=options.debugMode;}
if(options.toJSON){this.toJSON=options.toJSON;}
if(options.fromJSON){this.fromJSON=options.fromJSON;}}
var formID="rshStorageForm";var textareaID="rshStorageField";var formStyles=this.debugMode?historyStorage.showStyles:historyStorage.hideStyles;var textareaStyles=(historyStorage.debugMode?'width: 800px;height:80px;border:1px solid black;':historyStorage.hideStyles);var textareaHTML='<form id="'+formID+'" style="'+formStyles+'">'
+'<textarea id="'+textareaID+'" style="'+textareaStyles+'"></textarea>'
+'</form>';document.write(textareaHTML);this.storageField=document.getElementById(textareaID);if(typeof window.opera!=="undefined"){this.storageField.focus();}},put:function(key,value){this.assertValidKey(key);if(this.hasKey(key)){this.remove(key);}
this.storageHash[key]=value;this.saveHashTable();},get:function(key){this.assertValidKey(key);this.loadHashTable();var value=this.storageHash[key];if(value===undefined){value=null;}
return value;},remove:function(key){this.assertValidKey(key);this.loadHashTable();delete this.storageHash[key];this.saveHashTable();},reset:function(){this.storageField.value="";this.storageHash={};},hasKey:function(key){this.assertValidKey(key);this.loadHashTable();return(typeof this.storageHash[key]!=="undefined");},isValidKey:function(key){return(typeof key==="string");},showStyles:'border:0;margin:0;padding:0;',hideStyles:'left:-1000px;top:-1000px;width:1px;height:1px;border:0;position:absolute;',debugMode:false,storageHash:{},hashLoaded:false,storageField:null,assertValidKey:function(key){var isValid=this.isValidKey(key);if(!isValid&&this.debugMode){throw new Error("Please provide a valid key for window.historyStorage. Invalid key = "+key+".");}},loadHashTable:function(){if(!this.hashLoaded){var serializedHashTable=this.storageField.value;if(serializedHashTable!==""&&serializedHashTable!==null){this.storageHash=this.fromJSON(serializedHashTable);this.hashLoaded=true;}}},saveHashTable:function(){this.loadHashTable();var serializedHashTable=this.toJSON(this.storageHash);this.storageField.value=serializedHashTable;},toJSON:function(o){return o.toJSONString();},fromJSON:function(s){return s.parseJSON();}};