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