diff --git a/ui/jquery.ui.draggable.js b/ui/jquery.ui.draggable.js
index 2c473d8aae4..3042401306e 100644
--- a/ui/jquery.ui.draggable.js
+++ b/ui/jquery.ui.draggable.js
@@ -317,7 +317,9 @@ $.widget("ui.draggable", $.ui.mouse, {
 	_cacheMargins: function() {
 		this.margins = {
 			left: (parseInt(this.element.css("marginLeft"),10) || 0),
-			top: (parseInt(this.element.css("marginTop"),10) || 0)
+			top: (parseInt(this.element.css("marginTop"),10) || 0),
+			right: (parseInt(this.element.css("marginRight"),10) || 0),
+			bottom: (parseInt(this.element.css("marginBottom"),10) || 0)
 		};
 	},
 
@@ -345,10 +347,10 @@ $.widget("ui.draggable", $.ui.mouse, {
 			var over = ($(ce).css("overflow") != 'hidden');
 
 			this.containment = [
-				co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
-				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
-				co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left,
-				co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top
+				co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0),
+				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0),
+				co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left - this.margins.right,
+				co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top  - this.margins.bottom
 			];
 		} else if(o.containment.constructor == Array) {
 			this.containment = o.containment;