Basic controls css and autoscroll

static/js/song-controls.js

@@ -0,0 +1,20 @@
+const controls = document.querySelector(".controls");
+const song = document.querySelector("iframe.song").contentWindow;
+
+var scroll;
+function pageScroll() {
+	song.scrollBy(0, 1);
+	scroll = setTimeout(pageScroll, 80);
+}
+
+document.querySelector("#autoscroll").addEventListener("click", function() {
+	if (this.classList.contains("active")) {
+		clearTimeout(scroll);
+	} else {
+		pageScroll();
+	}
+	this.classList.toggle("active");
+});
+
+// Display the controls on JS-enabled browsers
+window.addEventListener("load", () => controls.classList.remove = "hidden");