$('.toolbar .tools').append('<li><a id="gaz-darkmode-toggle" style="cursor:pointer;">Darkmode: Off</a></li>')
var $darkmode = $('<link rel="stylesheet" type="text/css" href="https://dl.dropboxusercontent.com/u/45182859/darkmode.css">')
var on = false;
$('#gaz-darkmode-toggle').click(function(){
	on = !on;
	if (on) {
		$('head').append($darkmode);
		$('#gaz-darkmode-toggle').text('Darkmode: on');
	} else {
		$darkmode.remove();
		$('#gaz-darkmode-toggle').text('Darkmode: off');
	}
})