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