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) {
			// To stop the callback firing twice during initilization if no hash present
			if (jQuery.historyCurrentHash == '') {
			jQuery.historyCurrentHash = '#';
		}
		
			// add hidden iframe for IE
			$("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) {
			// etablish back/forward stacks
			jQuery.historyBackStack = [];
			jQuery.historyBackStack.length = history.length;
			jQuery.historyForwardStack = [];
			
			jQuery.isFirst = true;
		}
		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.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 != 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) { // 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;
						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 (document.URL.indexOf('#') >= 0) {
						jQuery.historyCallback(document.URL.split('#')[1]);
					} else {
						var current_hash = location.hash;
						jQuery.historyCallback('');
					}
					jQuery.isFirst = true;
				}
			}
		} else {
			// otherwise, check for location.hash
			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;
			// 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);
		}
	}
});

function affichage(ancre)
{
	var tab_url = String(ancre).split('#');

	//on cache toutes les div
	var tableau = $(".select_diplome > div");
	jQuery.each(tableau, function(key_tab, value_tab) {
			$(value_tab).hide();
	 });
	 var tableau = $("div[@class*=P],div[@class*=P] > .resume, div[@class*=O]");
	 jQuery.each(tableau, function(key_tab, value_tab) {
			$(value_tab).hide();
	 });

	 
	 //on enleve toutes les classes "select"
	 var tab_onglet = $(".onglet li h3");
 		 jQuery.each(tab_onglet, function(cle_onglet, valeur_onglet) {
 			$(".onglet li h3."+String(valeur_onglet.className).split(" ")[0]).removeClass('select');
	 });
	 var tab_liens = $(".select_diplome a");
	 jQuery.each(tab_liens, function(cle_liens, valeur_liens) {
 			$(valeur_liens).removeClass('select');
	 });
	 
	 //on enlève l'attribute selected aux select
	 var tab_select = $(".select_diplome option");
	 jQuery.each(tab_select, function(cle_select, valeur_select) {
	 	 if (cle_select == 0) 
	 	 	$(valeur_select).attr("selected","'selected'");
	 	 else
	     	$(valeur_select).removeAttr("selected");
	 });
	 

  	if (tab_url.length == 1)
  	{
  		$(".pres-diplomes").show();
  	}
  	else
  	{

  		var tab_elements = String(tab_url[1]).split("_");
  		var i = 0;

  		// on découpe les éléments en groupe de 3
  		while (i<tab_elements.length)
  		{
  			var elem = "";
  			for (j=0;j<=i;j++)
  			{
  				elem = $.trim(elem + "_" + tab_elements[j]);
  			}
  			elem = "." + elem.substr(1,elem.length);

  			$(elem).show();
  			switch (i)
  			{
  				case 0:
  					var num_onglet = String(tab_elements[0]).split("D")[1];
			  		var tab_onglet = $(".onglet li h3");
			  		var onglet = tab_onglet[num_onglet-1];
			  		$(onglet).addClass('select');
  					break;
  				case 1:
  					$("option[@value='#"+elem.substr(1,elem.length)+"']").attr("selected","'selected'");
  					break;
  				case 2:
  					$("a[@href='#"+tab_url[1]+"']").addClass('select');
  					break;
  			} 			
  			i++;
  		}
  		// on affiche le champs resume si on a pas fait le chemin diplome+parcours+option
  		if (tab_elements.length != 3)
  		{
  			elem = elem + " .resume";
  			$(elem).show();
  		}
  	}
}

$(document).ready(function(){

	$.historyInit(pageload);
	$("a[@rel='history']").click(function(){
		var hash = this.href;
		hash = hash.replace(/^.*#/, '');
		$.historyLoad(hash);
		return false;
		
	});
	$("select[@rel='history']").change(function(){
		var hash = this.options[this.selectedIndex].value;
		hash = hash.replace(/^.*#/, '');
		$.historyLoad(hash);
		return false;
		
	});

});

function pageload(hash) {
	if ((hash == "") &&(String(window.location).split("#").length == 2))
	{
		var texte = String(window.location).split("#");
		window.location = texte[0];
	}
	affichage(window.location);
}