jQuery.extend({historyCurrentHash:undefined,historyCallback:undefined,historyInit:function(callback){jQuery.historyCallback=callback;var current_hash=location.hash;jQuery.historyCurrentHash=current_hash;if(jQuery.browser.msie){if(jQuery.historyCurrentHash==""){jQuery.historyCurrentHash="#";}if(!$("#jQuery_history").size()){$("body").prepend('<iframe id="jQuery_history" style="display:none"></iframe>');}var ihistory=$("#jQuery_history")[0];var iframe=ihistory.contentWindow.document;iframe.open();iframe.close();iframe.location.hash=current_hash;}else{if($.browser.safari){jQuery.historyBackStack=[];jQuery.historyBackStack.length=history.length;jQuery.historyForwardStack=[];jQuery.isFirst=true;}}jQuery.historyCallback(current_hash.replace(/^#/,""));setInterval(jQuery.historyCheck,100);},historyAddHistory:function(hash){jQuery.historyBackStack.push(hash);jQuery.historyForwardStack.length=0;this.isFirst=true;},historyCheck:function(){if(jQuery.browser.msie){var ihistory=$("#jQuery_history")[0];var iframe=ihistory.contentDocument||ihistory.contentWindow.document;var current_hash=iframe.location.hash;if(current_hash!=jQuery.historyCurrentHash){location.hash=current_hash;jQuery.historyCurrentHash=current_hash;jQuery.historyCallback(current_hash.replace(/^#/,""));}}else{if($.browser.safari){if(!jQuery.dontCheck){var historyDelta=history.length-jQuery.historyBackStack.length;if(historyDelta){jQuery.isFirst=false;if(historyDelta<0){for(var i=0;i<Math.abs(historyDelta);i++){jQuery.historyForwardStack.unshift(jQuery.historyBackStack.pop());}}else{for(var i=0;i<historyDelta;i++){jQuery.historyBackStack.push(jQuery.historyForwardStack.shift());}}var cachedHash=jQuery.historyBackStack[jQuery.historyBackStack.length-1];if(cachedHash!=undefined){jQuery.historyCurrentHash=location.hash;jQuery.historyCallback(cachedHash);}}else{if(jQuery.historyBackStack[jQuery.historyBackStack.length-1]==undefined&&!jQuery.isFirst){if(document.URL.indexOf("#")>=0){jQuery.historyCallback(document.URL.split("#")[1]);}else{var current_hash=location.hash;jQuery.historyCallback("");}jQuery.isFirst=true;}}}}else{var current_hash=location.hash;if(current_hash!=jQuery.historyCurrentHash){jQuery.historyCurrentHash=current_hash;jQuery.historyCallback(current_hash.replace(/^#/,""));}}}},historyLoad:function(hash){var newhash;if(jQuery.browser.safari){newhash=hash;}else{newhash="#"+hash;location.hash=newhash;}jQuery.historyCurrentHash=newhash;if(jQuery.browser.msie){var ihistory=$("#jQuery_history")[0];var iframe=ihistory.contentWindow.document;iframe.open();iframe.close();iframe.location.hash=newhash;jQuery.historyCallback(hash);}else{if(jQuery.browser.safari){jQuery.dontCheck=true;this.historyAddHistory(hash);var fn=function(){jQuery.dontCheck=false;};window.setTimeout(fn,200);jQuery.historyCallback(hash);location.hash=newhash;}else{jQuery.historyCallback(hash);}}}});