function load_login_window(){
	var get = "";
	var post = "";
	var path = '../authentification/log_prosses.php';
	var element = 'log_div';
	ajax(path,get,post,element);
	var element = '';
}
	
function logout(){
	var get = "?doLogout=true";
	var post = "";
	var path = '../authentification/log_prosses.php';
	var element = 'log_div';
	ajax(path,get,post,element);
	var element = '';
}