FormChecker.prototype.LoginFormCheck = function() {
	var t = document.forms['login_form'];
	
	var login = t['login'].value;
	var psw = t['psw'].value;
	
	if(login == '') return this.FCAlert('{__prosze_podac_login}');
	if(psw == '') return this.FCAlert('{__prosze_podac_haslo}');
	
	return true;
}