diff --git a/changelog.txt b/changelog.txt
index 348d3cfa..9a78b48f 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -30,6 +30,9 @@ OPENSEADRAGON CHANGELOG
 * Added a number of easier coordinate conversion methods to viewport (#243)
 * Added the ability to create a viewer and start at a specified page (#252)
 * Fixed image resolve issue with collection mode (#255)
+* DOM events are now passed through as 'event.originalEvent' in viewer and button events where appropriate. Effects the following events:
+*     Viewer: 'canvas-release', 'canvas-click', 'canvas-drag', 'canvas-scroll', 'container-enter', 'container-exit', 'container-release'
+*     Button: 'enter', 'exit', 'press', 'release', 'focus', 'blur', 'click'
 
 0.9.131:
 
diff --git a/src/button.js b/src/button.js
index e32ca35a..8a09cdb0 100644
--- a/src/button.js
+++ b/src/button.js
@@ -178,7 +178,7 @@ $.Button = function( options ) {
         enterHandler: function( event ) {
             if ( event.insideElementPressed ) {
                 inTo( _this, $.ButtonState.DOWN );
-                _this.raiseEvent( "enter", {} );
+                _this.raiseEvent( "enter", { originalEvent: event.originalEvent } );
             } else if ( !event.buttonDownAny ) {
                 inTo( _this, $.ButtonState.HOVER );
             }
@@ -186,30 +186,30 @@ $.Button = function( options ) {
 
         focusHandler: function ( event ) {
             this.enterHandler( event );
-            _this.raiseEvent( "focus", {} );
+            _this.raiseEvent( "focus", { originalEvent: event.originalEvent } );
         },
 
         exitHandler: function( event ) {
             outTo( _this, $.ButtonState.GROUP );
             if ( event.insideElementPressed ) {
-                _this.raiseEvent( "exit", {} );
+                _this.raiseEvent( "exit", { originalEvent: event.originalEvent } );
             }
         },
 
         blurHandler: function ( event ) {
             this.exitHandler( event );
-            _this.raiseEvent( "blur", {} );
+            _this.raiseEvent( "blur", { originalEvent: event.originalEvent } );
         },
 
         pressHandler: function ( event ) {
             inTo( _this, $.ButtonState.DOWN );
-            _this.raiseEvent( "press", {} );
+            _this.raiseEvent( "press", { originalEvent: event.originalEvent } );
         },
 
         releaseHandler: function( event ) {
             if ( event.insideElementPressed && event.insideElementReleased ) {
                 outTo( _this, $.ButtonState.HOVER );
-                _this.raiseEvent( "release", {} );
+                _this.raiseEvent( "release", { originalEvent: event.originalEvent } );
             } else if ( event.insideElementPressed ) {
                 outTo( _this, $.ButtonState.GROUP );
             } else {
@@ -219,15 +219,15 @@ $.Button = function( options ) {
 
         clickHandler: function( event ) {
             if ( event.quick ) {
-                _this.raiseEvent("click", {});
+                _this.raiseEvent("click", { originalEvent: event.originalEvent });
             }
         },
 
         keyHandler: function( event ){
             //console.log( "%s : handling key %s!", _this.tooltip, event.keyCode);
             if( 13 === event.keyCode ){
-                _this.raiseEvent( "click", {} );
-                _this.raiseEvent( "release", {} );
+                _this.raiseEvent( "click", { originalEvent: event.originalEvent } );
+                _this.raiseEvent( "release", { originalEvent: event.originalEvent } );
                 return false;
             }
             return true;
diff --git a/src/viewer.js b/src/viewer.js
index eef46142..d12c007f 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -530,7 +530,7 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
         VIEWERS[ this.hash ] = null;
         delete VIEWERS[ this.hash ];
 
-        this.raiseEvent( 'close', {} );
+        this.raiseEvent( 'close' );
 
         return this;
     },
@@ -1487,7 +1487,8 @@ function onCanvasClick( event ) {
         tracker: event.eventSource,
         position: event.position,
         quick: event.quick,
-        shift: event.shift
+        shift: event.shift,
+        originalEvent: event.originalEvent
     });
 }
 
@@ -1512,7 +1513,8 @@ function onCanvasDrag( event ) {
         tracker: event.eventSource,
         position: event.position,
         delta: event.delta,
-        shift: event.shift
+        shift: event.shift,
+        originalEvent: event.originalEvent
     });
 }
 
@@ -1524,7 +1526,8 @@ function onCanvasRelease( event ) {
         tracker: event.eventSource,
         position: event.position,
         insideElementPressed: event.insideElementPressed,
-        insideElementReleased: event.insideElementReleased
+        insideElementReleased: event.insideElementReleased,
+        originalEvent: event.originalEvent
     });
 }
 
@@ -1542,7 +1545,8 @@ function onCanvasScroll( event ) {
         tracker: event.eventSource,
         position: event.position,
         scroll: event.scroll,
-        shift: event.shift
+        shift: event.shift,
+        originalEvent: event.originalEvent
     });
     //cancels event
     return false;
@@ -1559,7 +1563,8 @@ function onContainerExit( event ) {
         tracker: event.eventSource,
         position: event.position,
         insideElementPressed: event.insideElementPressed,
-        buttonDownAny: event.buttonDownAny
+        buttonDownAny: event.buttonDownAny,
+        originalEvent: event.originalEvent
     });
 }
 
@@ -1574,7 +1579,8 @@ function onContainerRelease( event ) {
         tracker: event.eventSource,
         position: event.position,
         insideElementPressed: event.insideElementPressed,
-        insideElementReleased: event.insideElementReleased
+        insideElementReleased: event.insideElementReleased,
+        originalEvent: event.originalEvent
     });
 }
 
@@ -1585,7 +1591,8 @@ function onContainerEnter( event ) {
         tracker: event.eventSource,
         position: event.position,
         insideElementPressed: event.insideElementPressed,
-        buttonDownAny: event.buttonDownAny
+        buttonDownAny: event.buttonDownAny,
+        originalEvent: event.originalEvent
     });
 }