Change drum to match Switch, add fullscreen to songsel, fix tutorial

public/src/js/main.js

@@ -0,0 +1,29 @@
+function toggleFullscreen(){
+	var root = document.documentElement
+	if("requestFullscreen" in root){
+		if(document.fullscreenElement){
+			document.exitFullscreen()
+		}else{
+			root.requestFullscreen()
+		}
+	}else if("webkitRequestFullscreen" in root){
+		if(document.webkitFullscreenElement){
+			document.webkitExitFullscreen()
+		}else{
+			root.webkitRequestFullscreen()
+		}
+	}else if("mozRequestFullScreen" in root){
+		if(document.mozFullScreenElement){
+			document.mozCancelFullScreen()
+		}else{
+			root.mozRequestFullScreen()
+		}
+	}
+}
+
+var pageEvents = new PageEvents()
+var snd = {}
+var p2
+var loader = new Loader(() => {
+	new Titlescreen()
+})