// JavaScript Document
var cookieNameA = "mesureA"; // give the cookie a name
var cookieNameB = "mesureB"; // give the cookie a name

mycookieA = get_cookie(cookieNameA);
mycookieB = get_cookie(cookieNameB);

var timeToKeep = 31536000000; 
var expires = new Date();

expires.setTime(expires.getTime() + timeToKeep); 

var myfavoriteA = "livres";
var myfavoriteB = "si";

function initMesure() {
	if (mycookieA) {
		if (mycookieA == "kilos") {
			removeElement("livres");
			window.document.getElementById("mesKilos").style.display = "none";
			window.document.getElementById("mesLivres").style.display = "inline";
		} else {
			removeElement("kilos");
			window.document.getElementById("mesKilos").style.display = "inline";
			window.document.getElementById("mesLivres").style.display = "none";
		}
	} else {
		removeElement("livres");
		window.document.getElementById("mesKilos").style.display = "inline";
		window.document.getElementById("mesLivres").style.display = "none";
		set_cookie(cookieNameA, myfavoriteA, expires); 
	}
	if (mycookieB) {
		if (mycookieB == "si") {
			removeElement("si");
			window.document.getElementById("mesSi").style.display = "none";
			window.document.getElementById("mesKsi").style.display = "inline";
		} else {
			removeElement("ksi");
			window.document.getElementById("mesSi").style.display = "inline";
			window.document.getElementById("mesKsi").style.display = "none";
		}
	} else {
		removeElement("si");
		window.document.getElementById("mesSi").style.display = "inline";
		window.document.getElementById("mesKsi").style.display = "none";
		set_cookie(cookieNameB, myfavoriteB, expires); 
	}
}

function changeA() { 
	myfavoriteA = "kilos";
	removeElement("livres");
	addElement("kilos");
	window.document.getElementById("mesKilos").style.display = "none";
	window.document.getElementById("mesLivres").style.display = "inline";
	set_cookie(cookieNameA, myfavoriteA, expires);
}
function changeB() { 
	myfavoriteA = "livres";
	removeElement("kilos");
	addElement("livres");
	window.document.getElementById("mesKilos").style.display = "inline";
	window.document.getElementById("mesLivres").style.display = "none";
	set_cookie(cookieNameA, myfavoriteA, expires);
}
function changeC() {
	myfavoriteB = "si";
	removeElement("ksi");
	addElement("si");
	window.document.getElementById("mesSi").style.display = "inline";
	window.document.getElementById("mesKsi").style.display = "none";
	set_cookie(cookieNameB, myfavoriteB, expires);
}
function changeD() {
	myfavoriteA = "ksi";
	removeElement("si");
	addElement("ksi");
	window.document.getElementById("mesKsi").style.display = "inline";
	window.document.getElementById("mesSi").style.display = "none";
	set_cookie(cookieNameB, myfavoriteB, expires);
}

// Fonction pour enlever
function removeElement(theClass) {
	var myElements = getElementsByClass(theClass);
	for (i=0; i < myElements.length; i++) {
		myElements[i].style.display = "none";
	} 
}

function addElement(theClass) {
	var myElements = getElementsByClass(theClass);
	for (i=0; i < myElements.length; i++) {
		myElements[i].style.display = "block";
	}
}

// Fonction pour tous les classes
function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}

window.onload = function() {
	initMesure(); 
}