diff --git a/Emulator.js b/Emulator.js
index eb799aa..17ea6de 100644
--- a/Emulator.js
+++ b/Emulator.js
@@ -58,9 +58,11 @@ Emulator.addEventHandlers = function() {
 	console.log("Emulator: adding unfocus-event");
 	this.input.onblur = this.refocus;
 	console.log("Emulator: adding key-press-event");
-	this.input.onkeypress = this.handleKeyPress;
+	//this.input.onkeypress = this.handleKeyPress;
+	window.onkeypress = this.handleKeyPress;
 	console.log("Emulator: adding key-down-event");
-	this.input.onkeydown = this.handleKeyDown;
+	//this.input.onkeydown = this.handleKeyDown;
+	window.onkeydown = this.handleKeyDown;
 	var timerid = window.setInterval(function() {/*for (var i = 0; i < 10; i++)*/ Emulator.tick(0);}, 1);
 	Emulator.mainTickId = timerid;
 	console.log("Emulator: adding default 1ms (or cheated 0.1 ms) tick with tid=" + timerid);
diff --git a/KeyCodes.js b/KeyCodes.js
index b87d8a1..17b1523 100644
--- a/KeyCodes.js
+++ b/KeyCodes.js
@@ -4,17 +4,26 @@ KeyCodes.normalKey = function(code) {
 	return String.fromCharCode(code);
 }
 KeyCodes.isBackspace = function(code) {
-	if (code == 8)
-		return true;
-	return false;
+	return (code == 8);
 }
 KeyCodes.isDelete = function(code) {
-	if (code == 46)
-		return true;
-	return false;
+	return (code == 46);
 }
 KeyCodes.isEnter = function(code) {
-	if (code == 13)
-		return true;
-	return false;
+	return (code == 13);
+}
+KeyCodes.isEscape = function(code) {
+	return (code == 27);
+}
+KeyCodes.isLeft = function(code) {
+	return (code == 37);
+}
+KeyCodes.isUp = function(code) {
+	return (code == 38);
+}
+KeyCodes.isRight = function(code) {
+	return (code == 39);
+}
+KeyCodes.isDown = function(code) {
+	return (code == 40);
 }