var showListElements = function(id) {
	var content = document.getElementById(id);
	if (content.style.display == 'block') {
			content.style.display = 'none';
	} else {
			content.style.display = 'block';
	}
}

var eraseLogin = function(login) {
	if (login.value == 'Login') {
		login.value = '';
	}
}

var writeLogin = function(login) {
		if (login.value == '') {
				login.value = 'Login';
		}
}

var erasePass = function(pass) {
	if (pass.value == 'Pass') {
		pass.value = '';
		pass.type = 'password';
	}
}

var writePass = function(pass) {
	if (pass.value == '') {
		pass.type = 'text';
		pass.value = 'Pass';
	}
}

window.onload = function() {
	writePass(document.getElementById('pass'));
}