jQuery.extend({historyCurrentHash:undefined,historyCallback:undefined,historyIframeSrc:undefined,historyNeedIframe:jQuery.browser.msie&&(jQuery.browser.version<8||document.documentMode<8),historyInit:function(callback,src){jQuery.historyCallback=callback;if(src)jQuery.historyIframeSrc=src;var current_hash=location.hash.replace(/\?.*$/,'');jQuery.historyCurrentHash=current_hash;if(jQuery.historyNeedIframe){if(jQuery.historyCurrentHash==''){jQuery.historyCurrentHash='#'}
jQuery("body").prepend('<iframe id="jQuery_history" style="display: none;"'+' src="javascript:false;"></iframe>');var ihistory=jQuery("#jQuery_history")[0];var iframe=ihistory.contentWindow.document;iframe.open();iframe.close();iframe.location.hash=current_hash}
else if(jQuery.browser.safari){jQuery.historyBackStack=[];jQuery.historyBackStack.length=history.length;jQuery.historyForwardStack=[];jQuery.lastHistoryLength=history.length;jQuery.isFirst=true}
if(current_hash)
jQuery.historyCallback(current_hash.replace(/^#/,''));setInterval(jQuery.historyCheck,100)},historyAddHistory:function(hash){jQuery.historyBackStack.push(hash);jQuery.historyForwardStack.length=0;this.isFirst=true},historyCheck:function(){if(jQuery.historyNeedIframe){var ihistory=jQuery("#jQuery_history")[0];var iframe=ihistory.contentDocument||ihistory.contentWindow.document;var current_hash=iframe.location.hash.replace(/\?.*$/,'');if(current_hash!=jQuery.historyCurrentHash){location.hash=current_hash;jQuery.historyCurrentHash=current_hash;jQuery.historyCallback(current_hash.replace(/^#/,''))}}else if(jQuery.browser.safari){if(jQuery.lastHistoryLength==history.length&&jQuery.historyBackStack.length>jQuery.lastHistoryLength){jQuery.historyBackStack.shift()}
if(!jQuery.dontCheck){var historyDelta=history.length-jQuery.historyBackStack.length;jQuery.lastHistoryLength=history.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.replace(/\?.*$/,'');jQuery.historyCallback(cachedHash)}}else if(jQuery.historyBackStack[jQuery.historyBackStack.length-1]==undefined&&!jQuery.isFirst){if(location.hash){var current_hash=location.hash;jQuery.historyCallback(location.hash.replace(/^#/,''))}else{var current_hash='';jQuery.historyCallback('')}
jQuery.isFirst=true}}}else{var current_hash=location.hash.replace(/\?.*$/,'');if(current_hash!=jQuery.historyCurrentHash){jQuery.historyCurrentHash=current_hash;jQuery.historyCallback(current_hash.replace(/^#/,''))}}},historyLoad:function(hash){var newhash;hash=decodeURIComponent(hash.replace(/\?.*$/,'').replace('http://'+document.domain,''));if(jQuery.browser.safari){newhash=hash}
else{newhash='#'+hash;location.hash=newhash}
jQuery.historyCurrentHash=newhash;if(jQuery.historyNeedIframe){var ihistory=jQuery("#jQuery_history")[0];var iframe=ihistory.contentWindow.document;iframe.open();iframe.close();iframe.location.hash=newhash;jQuery.lastHistoryLength=history.length;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)}}});