function checkform() {
	var f = document.getElementById("signform");
	good = true;
	if (f.password.value != f.pass2.value) {
		alert("You must type same password twice!");
		good = false;
	}
	if (f.password.value.length < 5) {
		alert("Password must by 5 symbols or longer!");
		good = false;
	}
	if (f.login.value.length < 5) {
		alert("Login must by 5 symbols or longer!");
		good = false;
	}
	if (f.email.value.length < 5) {
		alert("You must type valid email!");
		good = false;
	}
	return good;
}