// Ecrire un cookie
function writeCookie(nom, valeur)
{
	var argv=writeCookie.arguments;
	var argc=writeCookie.arguments.length;
	var expires=(argc > 2) ? argv[2] : null;
	var path=(argc > 3) ? argv[3] : null;
	var domain=(argc > 4) ? argv[4] : null;
	var secure=(argc > 5) ? argv[5] : false;
	val=nom+"="+escape(valeur)+
	((expires==null) ? "" : ("; expires="+expires.toGMTString()))+
	((path==null) ? "" : ("; path="+path))+
	((domain==null) ? "" : ("; domain="+domain));/*+
	((secure==true) ? "; secure" : "");*/
	
	alert(val);
	document.cookie=val;
}

function getCookieVal(offset)
{
	var endstr=document.cookie.indexOf (";", offset);
	if (endstr==-1) endstr=document.cookie.length;
	
	return unescape(document.cookie.substring(offset, endstr)); 
}

// Lire un cookie
function readCookie(nom)
{
	var arg=nom+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	
	while (i<clen)
	{
		var j=i+alen;
		if (document.cookie.substring(i, j)==arg) return getCookieVal(j);
		i=document.cookie.indexOf(" ",i)+1;
		if (i==0) break;
	}
	
	return null; 
}

// Supprimer un cookie
function deleteCookie(nom)
{
	date=new Date;
	date.setFullYear(date.getFullYear()-1);
	
	writeCookie(nom,null,date); 
}

function setFavoris(value)
{
	var date = new Date;
	date.setFullYear(date.getFullYear()+10);
	writeCookie("TWA_WS_FAVORIS", value, date, "/", null, true);
}

function getFavoris()
{
	var ret = readCookie("TWA_WS_FAVORIS");
	if (ret == null) return "";
	return ret;
}

function canUseFavoris()
{
	return navigator.cookieEnabled == true ? true : false;
}