function fiche(root, nickname, avatar)	{
	var url = root + '/landing.php?avatar=' + avatar + '&nickname='+ nickname;
	window.open(url, "Messenger" , "toolbar=0,status=0,menubar=0,titlebar=0,scrollbars=0,resizable=0, top="+(screen.height-740)/2+", left="+(screen.width-710)/2+",width=710,height=620");
}