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;
	document.cookie=nom+"="+escape(valeur)+
	((expires==null) ? "" : ("; expires="+expires.toGMTString()))+
	((path==null) ? "" : ("; path="+path))+
	((domain==null) ? "" : ("; domain="+domain))+
	((secure==true) ? "; secure" : "");
}

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

function ReadCookie(nom)
{
	var arg=nom+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	var cookieVal = "";
	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; 
}

function DeleteCookie(nom)
{
    date = new Date;
    date.setFullYear(date.getFullYear()-3);
    WriteCookie(nom, null, date, "/");
} 

function CleanCookie(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)
		    DeleteCookie(nom);
		
		i=document.cookie.indexOf(" ",i)+1;
		
		if (i==0)
		    break;
	}
}

function CleanCookie2(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)
		    WriteCookie(nom, null, date);
		
		i=document.cookie.indexOf(" ",i)+1;
		
		if (i==0)
		    break;
	}
}