function toggle() {
	var dark = document.getElementById('dark');
	var toggle = document.getElementById('toggle');
	if (dark != undefined) {
		document.head.removeChild(dark);

		toggle.innerHTML = "DARK";
	} else {
		var css = document.createElement('link');
		css.rel = "stylesheet";
		css.type = "text/css";
		css.href = "style-dark.css";
		css.id = "dark";
		document.head.appendChild(css);

		toggle.innerHTML = "LIGHT";
	}
}