function night() {
	var d = new Date();
	var h = d.getHours();
	if ((h < 6) || (h > 22)) {
		$("#houses").attr("src", "/img/night.png");
	}
}

function leftgrow() {
	var left = $("#navbar").height();
	var right = $("#colright").height();
	if (right > left) {
		$("#navbar").height(right);
	}
}

function main() {
	leftgrow();
	night();
}

$(main);