/*
 * 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.
 */

jQuery.extend({historyCurrentHash:undefined,historyCallback:undefined,historyInit:function(d){jQuery.historyCallback=d;var c=location.hash;jQuery.historyCurrentHash=c;if((jQuery.browser.msie)&&(jQuery.browser.version<8)){if(jQuery.historyCurrentHash==""){jQuery.historyCurrentHash="#"}$("body").prepend('<iframe id="jQuery_history" style="display: none;"></iframe>');var a=$("#jQuery_history")[0];var b=a.contentWindow.document;b.open();b.close();b.location.hash=c}else{if($.browser.safari){jQuery.historyBackStack=[];jQuery.historyBackStack.length=history.length;jQuery.historyForwardStack=[];jQuery.isFirst=true}}jQuery.historyCallback(c.replace(/^#/,""));setInterval(jQuery.historyCheck,100)},historyAddHistory:function(a){jQuery.historyBackStack.push(a);jQuery.historyForwardStack.length=0;this.isFirst=true},historyCheck:function(){if((jQuery.browser.msie)&&(jQuery.browser.version<8)){var a=$("#jQuery_history")[0];var d=a.contentDocument||a.contentWindow.document;var f=d.location.hash;if(f!=jQuery.historyCurrentHash){location.hash=f;jQuery.historyCurrentHash=f;jQuery.historyCallback(f.replace(/^#/,""))}}else{if($.browser.safari){if(!jQuery.dontCheck){var b=history.length-jQuery.historyBackStack.length;if(b){jQuery.isFirst=false;if(b<0){for(var c=0;c<Math.abs(b);c++){jQuery.historyForwardStack.unshift(jQuery.historyBackStack.pop())}}else{for(var c=0;c<b;c++){jQuery.historyBackStack.push(jQuery.historyForwardStack.shift())}}var e=jQuery.historyBackStack[jQuery.historyBackStack.length-1];if(e!=undefined){jQuery.historyCurrentHash=location.hash;jQuery.historyCallback(e)}}else{if(jQuery.historyBackStack[jQuery.historyBackStack.length-1]==undefined&&!jQuery.isFirst){if(document.URL.indexOf("#")>=0){jQuery.historyCallback(document.URL.split("#")[1])}else{var f=location.hash;jQuery.historyCallback("")}jQuery.isFirst=true}}}}else{var f=location.hash;if(f!=jQuery.historyCurrentHash){jQuery.historyCurrentHash=f;jQuery.historyCallback(f.replace(/^#/,""))}}}},historyLoad:function(d){var e;if(jQuery.browser.safari){e=d}else{e="#"+d;location.hash=e}jQuery.historyCurrentHash=e;if((jQuery.browser.msie)&&(jQuery.browser.version<8)){var a=$("#jQuery_history")[0];var c=a.contentWindow.document;c.open();c.close();c.location.hash=e;jQuery.historyCallback(d)}else{if(jQuery.browser.safari){jQuery.dontCheck=true;this.historyAddHistory(d);var b=function(){jQuery.dontCheck=false};window.setTimeout(b,200);jQuery.historyCallback(d);location.hash=e}else{jQuery.historyCallback(d)}}}});