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JScript kode 

 /*
  * jQuery history plugin
  *
  * Copyright (c) 2006 Taku Sano (Mikage Sawatari)
  * Licensed under the MIT License:
  *   http://www.opensource.org/licenses/mit-license.php
  *
  * Modified by Lincoln Cooper to add Safari support and only call the callback once during initialization
  * for msie when no initial hash supplied.
  * API rewrite by Lauris Bukðis-Haberkorns
  */
 
 (function($) {
 
 function History()
 {
     this._curHash = '';
     this._callback = function(hash){};
 };
 
 $.extend(History.prototype, {
 
     init: function(callback) {
         this._callback = callback;
         this._curHash = location.hash;
 
         if($.browser.msie) {
             // To stop the callback firing twice during initilization if no hash present
             if (this._curHash == '') {
                 this._curHash = '#';
             }
 
             // add hidden iframe for IE
             $("body").prepend('<iframe id="jQuery_history" style="display: none;"></iframe>');
             var iframe = $("#jQuery_history")[0].contentWindow.document;
             iframe.open();
             iframe.close();
             iframe.location.hash = this._curHash;
         }
         else if ($.browser.safari) {
             // etablish back/forward stacks
             this._historyBackStack = [];
             this._historyBackStack.length = history.length;
             this._historyForwardStack = [];
             this._isFirst = true;
             this._dontCheck = false;
         }
         this._callback(this._curHash.replace(/^#/, ''));
         setInterval(this._check, 100);
     },
 
     add: function(hash) {
         // This makes the looping function do something
         this._historyBackStack.push(hash);
         
         this._historyForwardStack.length = 0; // clear forwardStack (true click occured)
         this._isFirst = true;
     },
     
     _check: function() {
         if($.browser.msie) {
             // On IE, check for location.hash of iframe
             var ihistory = $("#jQuery_history")[0];
             var iframe = ihistory.contentDocument || ihistory.contentWindow.document;
             var current_hash = iframe.location.hash;
             if(current_hash != $.history._curHash) {
             
                 location.hash = current_hash;
                 $.history._curHash = current_hash;
                 $.history._callback(current_hash.replace(/^#/, ''));
                 
             }
         } else if ($.browser.safari) {
             if (!$.history._dontCheck) {
                 var historyDelta = history.length - $.history._historyBackStack.length;
                 
                 if (historyDelta) { // back or forward button has been pushed
                     $.history._isFirst = false;
                     if (historyDelta < 0) { // back button has been pushed
                         // move items to forward stack
                         for (var i = 0; i < Math.abs(historyDelta); i++) $.history._historyForwardStack.unshift($.history._historyBackStack.pop());
                     } else { // forward button has been pushed
                         // move items to back stack
                         for (var i = 0; i < historyDelta; i++) $.history._historyBackStack.push($.history._historyForwardStack.shift());
                     }
                     var cachedHash = $.history._historyBackStack[$.history._historyBackStack.length - 1];
                     if (cachedHash != undefined) {
                         $.history._curHash = location.hash;
                         $.history._callback(cachedHash);
                     }
                 } else if ($.history._historyBackStack[$.history._historyBackStack.length - 1] == undefined && !$.history._isFirst) {
                     // back button has been pushed to beginning and URL already pointed to hash (e.g. a bookmark)
                     // document.URL doesn't change in Safari
                     if (document.URL.indexOf('#') >= 0) {
                         $.history._callback(document.URL.split('#')[1]);
                     } else {
                         $.history._callback('');
                     }
                     $.history._isFirst = true;
                 }
             }
         } else {
             // otherwise, check for location.hash
             var current_hash = location.hash;
             if(current_hash != $.history._curHash) {
                 $.history._curHash = current_hash;
                 $.history._callback(current_hash.replace(/^#/, ''));
             }
         }
     },
 
     load: function(hash) {
         var newhash;
         
         if ($.browser.safari) {
             newhash = hash;
         } else {
             newhash = '#' + hash;
             location.hash = newhash;
         }
         this._curHash = newhash;
         
         if ($.browser.msie) {
             var ihistory = $("#jQuery_history")[0]; // TODO: need contentDocument?
             var iframe = ihistory.contentWindow.document;
             iframe.open();
             iframe.close();
             iframe.location.hash = newhash;
             this._callback(hash);
         }
         else if ($.browser.safari) {
             this._dontCheck = true;
             // Manually keep track of the history values for Safari
             this.add(hash);
             
             // Wait a while before allowing checking so that Safari has time to update the "history" object
             // correctly (otherwise the check loop would detect a false change in hash).
             var fn = function() {$.history._dontCheck = false;};
             window.setTimeout(fn, 200);
             this._callback(hash);
             // N.B. "location.hash=" must be the last line of code for Safari as execution stops afterwards.
             //      By explicitly using the "location.hash" command (instead of using a variable set to "location.hash") the
             //      URL in the browser and the "history" object are both updated correctly.
             location.hash = newhash;
         }
         else {
           this._callback(hash);
         }
     }
 });
 
 $(document).ready(function() {
     $.history = new History(); // singleton instance
 });
 
 })(jQuery);

Så virker: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
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