function link_info() {
	document.getElementById('info_link').onclick = function() {return show_info()};
	var close = document.createElement('A');
	var close_text = document.createTextNode('close');
	close.appendChild(close_text);
	close.href = '#';
	close.onclick = function() {return hide_info()};
	document.getElementById('about').appendChild(close);
}

function show_info() {
	document.getElementById('about').style.display = 'block';
	return false;
}

function hide_info() {
	document.getElementById('about').style.display = 'none';
	return false;
}

link_info();