JavaScripttech Displaying a different image depending on the time of the day

HTML

<div id="Date"></div>

JavaScript

var current = new Date()
var day_night = current.getHours()
if (day_night <= 12) {
    $("#Date").append("<img src='http://hd.wallpaperswide.com/thumbs/summer_day-t2.jpg'>")
} else {
    $("#Date").append("<img src='http://dreamatico.com/data_images/night/night-1.jpg'>")
}