diff --git a/ui/jquery.ui.draggable.js b/ui/jquery.ui.draggable.js
index 8d2da862c..7e3d5f378 100644
--- a/ui/jquery.ui.draggable.js
+++ b/ui/jquery.ui.draggable.js
@@ -71,7 +71,7 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		};
 	},
 
-	_handleScrolling: function( event ) {
+	_handleScrolling: function( position ) {
 		var scrollTop = this.scrollParent.scrollTop(),
 			scrollLeft = this.scrollParent.scrollLeft(),
 			scrollSensitivity = 20,
@@ -86,10 +86,10 @@ $.widget( "ui.draggable", $.ui.interaction, {
 			overflowTop = this.overflowOffset ?
 				this.overflowOffset.top :
 				scrollTop,
-			xRight = this.overflow.width + overflowLeft - event.pageX,
-			xLeft = event.pageX - overflowLeft,
-			yBottom = this.overflow.height + overflowTop - event.pageY,
-			yTop = event.pageY - overflowTop;
+			xRight = this.overflow.width + overflowLeft - position.left,
+			xLeft = position.left - overflowLeft,
+			yBottom = this.overflow.height + overflowTop - position.top,
+			yTop = position.top - overflowTop;
 
 		// Handle vertical scrolling
 		if ( yBottom < scrollSensitivity ) {
@@ -110,7 +110,7 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		}
 	},
 
-	_start: function( event ) {
+	_start: function( event, position ) {
 		// The actual dragging element, should always be a jQuery object
 		this.dragEl = this.element;
 
@@ -146,10 +146,7 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		this.position = $.extend( {}, this.startPosition );
 		this.offset = $.extend( {}, this.startOffset );
 
-		this.startCoords = {
-			left: event.pageX,
-			top: event.pageY
-		};
+		this.startCoords = position;
 
 		// Cache the offset of scrollParent, if required for _handleScrolling
 		if ( this.scrollParent[0] !== this.document[0] && this.scrollParent[0].tagName !== "HTML" ) {
@@ -163,7 +160,7 @@ $.widget( "ui.draggable", $.ui.interaction, {
 				this.window.width() : this.scrollParent.width()
 		};
 
-		this._preparePosition( event );
+		this._preparePosition( position );
 
 		// If user cancels start, don't allow dragging
 		if ( this._trigger( "start", event, this._uiHash() ) === false ) {
@@ -171,29 +168,29 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		}
 
 		this._blockFrames();
-		this._setCss( event );
+		this._setCss();
 	},
 
-	_move: function( event ) {
-		this._preparePosition( event );
+	_move: function( event, position ) {
+		this._preparePosition( position );
 
 		// If user cancels drag, don't move the element
 		if ( this._trigger( "drag", event, this._uiHash() ) === false ) {
 			return;
 		}
 
-		this._setCss( event );
+		this._setCss();
 
 		// Scroll the scrollParent, if needed
-		this._handleScrolling( event );
+		this._handleScrolling( position );
 	},
 
-	_stop: function( event ) {
-		this._preparePosition( event );
+	_stop: function( event, position ) {
+		this._preparePosition( position );
 
 		// If user cancels stop, leave helper there, disallow any CSS changes
 		if ( this._trigger( "stop", event, this._uiHash() ) === false ) {
-			this._setCss( event );
+			this._setCss();
 			if ( this.options.helper ) {
 				this.dragEl.remove();
 			}
@@ -204,9 +201,9 @@ $.widget( "ui.draggable", $.ui.interaction, {
 
 	// Uses event to determine new position of draggable, before any override from callbacks
 	// TODO: handle absolute element inside relative parent like a relative element
-	_preparePosition: function( event ) {
-		var leftDiff = event.pageX - this.startCoords.left,
-			topDiff = event.pageY - this.startCoords.top,
+	_preparePosition: function( position ) {
+		var leftDiff = position.left - this.startCoords.left,
+			topDiff = position.top - this.startCoords.top,
 			newLeft = leftDiff + this.startPosition.left,
 			newTop = topDiff + this.startPosition.top;
 
@@ -227,8 +224,8 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		this.offset.top = this.startOffset.top + topDiff;
 	},
 
-	// Places draggable where mouse or user from callback indicates
-	_setCss: function( event ) {
+	// Places draggable where event, or user via event/callback, indicates
+	_setCss: function() {
 		var newLeft, newTop;
 
 		// User overriding left/top so shortcut math is no longer valid
@@ -257,7 +254,7 @@ $.widget( "ui.draggable", $.ui.interaction, {
 		});
 	},
 
-	_uiHash: function( event ) {
+	_uiHash: function() {
 		var ret = {
 			position: this.position,
 			offset: this.offset
diff --git a/ui/jquery.ui.interaction.js b/ui/jquery.ui.interaction.js
index cea8d8873..6504c57d8 100644
--- a/ui/jquery.ui.interaction.js
+++ b/ui/jquery.ui.interaction.js
@@ -12,24 +12,24 @@ $.widget( "ui.interaction", {
 
 	_startProxy: function( hook ) {
 		var that = this;
-		return function( event ) {
-			that._interactionStart( event, hook );
+		return function( event, position ) {
+			that._interactionStart( event, position, hook );
 		}
 	},
 
-	_interactionStart: function( event, hook ) {
-		if ( false !== this._start( event ) ) {
+	_interactionStart: function( event, position, hook ) {
+		if ( false !== this._start( event, position ) ) {
 			interaction.started = true;
 			interaction.hooks[ hook ].handle( this );
 		}
 	},
 
-	_interactionMove: function( event ) {
-		this._move( event );
+	_interactionMove: function( event, position ) {
+		this._move( event, position );
 	},
 
-	_interactionStop: function( event ) {
-		this._stop( event );
+	_interactionStop: function( event, position ) {
+		this._stop( event, position );
 		interaction.started = false;
 	}
 });
@@ -46,7 +46,10 @@ interaction.hooks.mouse = {
 			"mousedown": function( event ) {
 				if ( event.which === 1 ) {
 					event.preventDefault();
-					start( event );
+					start( event, {
+						left: event.pageX,
+						top: event.pageY
+					});
 				}
 			}
 		});
@@ -55,11 +58,17 @@ interaction.hooks.mouse = {
 	handle: function( widget ) {
 		function mousemove( event ) {
 			event.preventDefault();
-			widget._interactionMove( event );
+			widget._interactionMove( event, {
+				left: event.pageX,
+				top: event.pageY
+			});
 		}
 
 		function mouseup( event ) {
-			widget._interactionStop( event );
+			widget._interactionStop( event, {
+				left: event.pageX,
+				top: event.pageY
+			});
 			widget.document
 				.unbind( "mousemove", mousemove )
 				.unbind( "mouseup", mouseup );