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 = '#'; }
$("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); } } });