/*
Copyright (c) 2007 Brian Dillard and Brad Neuberg:
Brian Dillard | Project Lead | bdillard@pathf.com | http://blogs.pathf.com/agileajax/
Brad Neuberg | Original Project Creator | http://codinginparadise.org
   
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

window.dhtmlHistory={isIE:false,isOpera:false,isSafari:false,isKonquerer:false,isGecko:false,isSupported:false,create:function(_1){var _2=this;var UA=navigator.userAgent.toLowerCase();var _4=navigator.platform.toLowerCase();var _5=navigator.vendor||"";if(_5==="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(_5.indexOf("Apple Computer, Inc.")>-1){this.isSafari=true;this.isSupported=(_4.indexOf("mac")>-1);}else{if(UA.indexOf("gecko")!=-1){this.isGecko=true;this.isSupported=true;}}}}}window.historyStorage.setup(_1);if(this.isSafari){this.createSafari();}else{if(this.isOpera){this.createOpera();}}var _6=this.getCurrentLocation();this.currentLocation=_6;if(this.isIE){this.createIE(_6);}var _7=function(){_2.firstLoad=null;};this.addEventListener(window,"unload",_7);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 _8=function(){_2.checkLocation();};setInterval(_8,100);},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(_9){this.listener=_9;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(_d,_e){if(this.isSafari){_d=this.removeHash(_d);historyStorage.put(_d,_e);this.currentLocation=_d;window.location.hash=_d;this.putSafariState(_d);}else{var _f=this;var _10=function(){if(_f.currentWaitTime>0){_f.currentWaitTime=_f.currentWaitTime-_f.waitTime;}_d=_f.removeHash(_d);if(document.getElementById(_d)&&_f.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: "+_d;throw new Error(e);}historyStorage.put(_d,_e);_f.ignoreLocationChange=true;_f.ieAtomicLocationChange=true;_f.currentLocation=_d;window.location.hash=_d;if(_f.isIE){_f.iframe.src="blank.html?"+_d;}_f.ieAtomicLocationChange=false;};window.setTimeout(_10,this.currentWaitTime);this.currentWaitTime=this.currentWaitTime+this.waitTime;}},isFirstLoad:function(){return this.firstLoad;},getVersion:function(){return "0.6";},getCurrentLocation:function(){var r=(false?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(_15){this.waitTime=400;var _16=(historyStorage.debugMode?"width: 800px;height:80px;border:1px solid black;":historyStorage.hideStyles);var _17="rshHistoryFrame";var _18="<iframe frameborder=\"0\" id=\""+_17+"\" style=\""+_16+"\" src=\"blank.html?"+_15+"\"></iframe>";document.write(_18);this.iframe=document.getElementById(_17);},createOpera:function(){this.waitTime=400;var _19="<img src=\"javascript:location.href='javascript:dhtmlHistory.checkLocation();';\" style=\""+historyStorage.hideStyles+"\" />";document.write(_19);},createSafari:function(){var _1a="rshSafariForm";var _1b="rshSafariStack";var _1c="rshSafariLength";var _1d=historyStorage.debugMode?historyStorage.showStyles:historyStorage.hideStyles;var _1e=(historyStorage.debugMode?"width:800px;height:20px;border:1px solid black;margin:0;padding:0;":historyStorage.hideStyles);var _1f="<form id=\""+_1a+"\" style=\""+_1d+"\">"+"<input type=\"text\" style=\""+_1e+"\" id=\""+_1b+"\" value=\"[]\"/>"+"<input type=\"text\" style=\""+_1e+"\" id=\""+_1c+"\" value=\"\"/>"+"</form>";document.write(_1f);this.safariStack=document.getElementById(_1b);this.safariLength=document.getElementById(_1c);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 _21=this.getSafariStack();var _22=_21[history.length-this.safariHistoryStartPoint-1];return _22;},putSafariState:function(_23){var _24=this.getSafariStack();_24[history.length-this.safariHistoryStartPoint]=_23;this.safariStack.value=historyStorage.toJSON(_24);},fireHistoryEvent:function(_25){var _26=historyStorage.get(_25);this.listener.call(null,_25,_26);},checkLocation:function(){if(!this.isIE&&this.ignoreLocationChange){this.ignoreLocationChange=false;return;}if(!this.isIE&&this.ieAtomicLocationChange){return;}var _27=this.getCurrentLocation();if(_27==this.currentLocation){return;}this.ieAtomicLocationChange=true;if(this.isIE&&this.getIframeHash()!=_27){this.iframe.src="blank.html?"+_27;}else{if(this.isIE){return;}}this.currentLocation=_27;this.ieAtomicLocationChange=false;this.fireHistoryEvent(_27);},getIframeHash:function(){var doc=this.iframe.contentWindow.document;var _29=String(doc.location.search);if(_29.length==1&&_29.charAt(0)=="?"){_29="";}else{if(_29.length>=2&&_29.charAt(0)=="?"){_29=_29.substring(1);}}return _29;},removeHash:function(_2a){var r;if(_2a===null||_2a===undefined){r=null;}else{if(_2a===""){r="";}else{if(_2a.length==1&&_2a.charAt(0)=="#"){r="";}else{if(_2a.length>1&&_2a.charAt(0)=="#"){r=_2a.substring(1);}else{r=_2a;}}}}return r;},iframeLoaded:function(_2c){if(this.ignoreLocationChange){this.ignoreLocationChange=false;return;}var _2d=String(_2c.search);if(_2d.length==1&&_2d.charAt(0)=="?"){_2d="";}else{if(_2d.length>=2&&_2d.charAt(0)=="?"){_2d=_2d.substring(1);}}window.location.hash=_2d;this.fireHistoryEvent(_2d);}};window.historyStorage={setup:function(_2e){if(typeof _2e!=="undefined"){if(_2e.debugMode){this.debugMode=_2e.debugMode;}if(_2e.toJSON){this.toJSON=_2e.toJSON;}if(_2e.fromJSON){this.fromJSON=_2e.fromJSON;}}var _2f="rshStorageForm";var _30="rshStorageField";var _31=this.debugMode?historyStorage.showStyles:historyStorage.hideStyles;var _32=(historyStorage.debugMode?"width: 800px;height:80px;border:1px solid black;":historyStorage.hideStyles);var _33="<form id=\""+_2f+"\" style=\""+_31+"\">"+"<textarea id=\""+_30+"\" style=\""+_32+"\"></textarea>"+"</form>";document.write(_33);this.storageField=document.getElementById(_30);if(typeof window.opera!=="undefined"){this.storageField.focus();}},put:function(key,_35){this.assertValidKey(key);if(this.hasKey(key)){this.remove(key);}this.storageHash[key]=_35;this.saveHashTable();},get:function(key){this.assertValidKey(key);this.loadHashTable();var _37=this.storageHash[key];if(_37===undefined){_37=null;}return _37;},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 _3c=this.isValidKey(key);if(!_3c&&this.debugMode){throw new Error("Please provide a valid key for window.historyStorage. Invalid key = "+key+".");}},loadHashTable:function(){if(!this.hashLoaded){var _3d=this.storageField.value;if(_3d!==""&&_3d!==null){this.storageHash=this.fromJSON(_3d);this.hashLoaded=true;}}},saveHashTable:function(){this.loadHashTable();var _3e=this.toJSON(this.storageHash);this.storageField.value=_3e;},toJSON:function(o){return o.toJSONString();},fromJSON:function(s){return s.parseJSON();}};
