diff --git a/src/pixi/InteractionManager.js b/src/pixi/InteractionManager.js
index 9c2fbfc..6373e86 100644
--- a/src/pixi/InteractionManager.js
+++ b/src/pixi/InteractionManager.js
@@ -193,7 +193,7 @@
 
 PIXI.InteractionManager.prototype.onMouseMove = function(event)
 {
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	// TODO optimize by not check EVERY TIME! maybe half as often? //
 	var rect = this.target.view.getBoundingClientRect();
 	
@@ -219,7 +219,7 @@
 PIXI.InteractionManager.prototype.onMouseDown = function(event)
 {
 	event.preventDefault();
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	
 	// loop through inteaction tree...
 	// hit test each item! -> 
@@ -257,7 +257,7 @@
 
 PIXI.InteractionManager.prototype.onMouseUp = function(event)
 {
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	
 	var global = this.mouse.global;
 	
@@ -390,7 +390,7 @@
 
 PIXI.InteractionManager.prototype.onTouchMove = function(event)
 {
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	var rect = this.target.view.getBoundingClientRect();
 	var changedTouches = event.changedTouches;
 	
@@ -415,7 +415,7 @@
 PIXI.InteractionManager.prototype.onTouchStart = function(event)
 {
 	event.preventDefault();
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	
 	var rect = this.target.view.getBoundingClientRect();
 	
@@ -458,7 +458,7 @@
 
 PIXI.InteractionManager.prototype.onTouchEnd = function(event)
 {
-	this.mouse.originalEvent = event;
+	this.mouse.originalEvent = event || window.event; //IE uses window.event
 	var rect = this.target.view.getBoundingClientRect();
 	var changedTouches = event.changedTouches;