function updateName() {
	var text = document.getElementById('signupUsername');
	var button = document.getElementById('checkAvailability');

	if (text.value.indexOf(' ') != -1) {
		text.value = text.value.replace(' ', '_');
	}

	if (text.value.length>0) {
		button.disabled = false;
	} else {
		button.disabled = true;
	}
}

function setName(name) {
	var text = document.getElementById('signupUsername');
	text.value = name;
}

function showTerms() {
	var rulesTable = document.getElementById('rulesTable');
	rulesTable.style.visibility = 'visible';
}