/*
 * jQuery history plugin
 * 
 * sample page: http://www.mikage.to/jquery/jquery_history.html
 *
 * Copyright (c) 2006-2009 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,
	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) {
			// To stop the callback firing twice during initilization if no hash present
			if (jQuery.historyCurrentHash == '') {
				jQuery.historyCurrentHash = '#';
			}
		
			// add hidden iframe for IE
			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) {
			// etablish back/forward stacks
			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) {
		// This makes the looping function do something
		jQuery.historyBackStack.push(hash);
		
		jQuery.historyForwardStack.length = 0; // clear forwardStack (true click occured)
		this.isFirst = true;
	},
	
	historyCheck: function(){
		if (jQuery.historyNeedIframe) {
			// On IE, check for location.hash of iframe
			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) { // back or forward button has been pushed
					jQuery.isFirst = false;
					if (historyDelta < 0) { // back button has been pushed
						// move items to forward stack
						for (var i = 0; i < Math.abs(historyDelta); i++) jQuery.historyForwardStack.unshift(jQuery.historyBackStack.pop());
					} else { // forward button has been pushed
						// move items to back stack
						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(/\?.*$/, '');
						jQuery.historyCallback(cachedHash);
					}
				} else if (jQuery.historyBackStack[jQuery.historyBackStack.length - 1] == undefined && !jQuery.isFirst) {
					// back button has been pushed to beginning and URL already pointed to hash (e.g. a bookmark)
					// document.URL doesn't change in Safari
					if (location.hash) {
						var current_hash = location.hash;
						jQuery.historyCallback(location.hash.replace(/^#/, ''));
					} else {
						var current_hash = '';
						jQuery.historyCallback('');
					}
					jQuery.isFirst = true;
				}
			}
		} else {
			// otherwise, check for location.hash
			var current_hash = location.hash.replace(/\?.*$/, '');
			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.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;
			// Manually keep track of the history values for Safari
			this.historyAddHistory(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() {jQuery.dontCheck = false;};
			window.setTimeout(fn, 200);
			jQuery.historyCallback(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 {
		  jQuery.historyCallback(hash);
		}
	}
});




/**
 * jQuery.ScrollTo - Easy element scrolling using jQuery.
 * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 * Date: 2/19/2008
 * @author Ariel Flesler
 * @version 1.3.3
 */
;(function($){var o=$.scrollTo=function(a,b,c){o.window().scrollTo(a,b,c)};o.defaults={axis:'y',duration:1};o.window=function(){return $($.browser.safari?'body':'html')};$.fn.scrollTo=function(l,m,n){if(typeof m=='object'){n=m;m=0}n=$.extend({},o.defaults,n);m=m||n.speed||n.duration;n.queue=n.queue&&n.axis.length>1;if(n.queue)m/=2;n.offset=j(n.offset);n.over=j(n.over);return this.each(function(){var a=this,b=$(a),t=l,c,d={},w=b.is('html,body');switch(typeof t){case'number':case'string':if(/^([+-]=)?\d+(px)?$/.test(t)){t=j(t);break}t=$(t,this);case'object':if(t.is||t.style)c=(t=$(t)).offset()}$.each(n.axis.split(''),function(i,f){var P=f=='x'?'Left':'Top',p=P.toLowerCase(),k='scroll'+P,e=a[k],D=f=='x'?'Width':'Height';if(c){d[k]=c[p]+(w?0:e-b.offset()[p]);if(n.margin){d[k]-=parseInt(t.css('margin'+P))||0;d[k]-=parseInt(t.css('border'+P+'Width'))||0}d[k]+=n.offset[p]||0;if(n.over[p])d[k]+=t[D.toLowerCase()]()*n.over[p]}else d[k]=t[p];if(/^\d+$/.test(d[k]))d[k]=d[k]<=0?0:Math.min(d[k],h(D));if(!i&&n.queue){if(e!=d[k])g(n.onAfterFirst);delete d[k]}});g(n.onAfter);function g(a){b.animate(d,m,n.easing,a&&function(){a.call(this,l)})};function h(D){var b=w?$.browser.opera?document.body:document.documentElement:a;return b['scroll'+D]-b['client'+D]}})};function j(a){return typeof a=='object'?a:{top:a,left:a}}})(jQuery);

$(function(){$.historyInit(function(sUrl){if(sUrl!=''){$('#eettafel-inhoud').load('/ajax/eettafel/'+sUrl,'',function(){$.scrollTo($('#content'))});_gaq.push(['_trackPageview','/eettafel/'+sUrl])}});$('#eettafel-menu a').live('click',function(){$.historyLoad(this.href.substr(this.href.lastIndexOf("/")+1));return false})})