--- jquery-1.4.2.js	2010-06-30 10:58:48.000000000 +0200
+++ jquery-1.4.2.patched.js	2010-10-03 23:54:49.000000000 +0200
@@ -5576,7 +5576,8 @@
 					opt.display = jQuery.css(this, "display");
 
 					// Make sure that nothing sneaks out
-					opt.overflow = this.style.overflow;
+					opt.overflowX = this.style.overflowX;
+					opt.overflowY = this.style.overflowY;
 				}
 
 				if ( jQuery.isArray( prop[p] ) ) {
@@ -5586,8 +5587,11 @@
 				}
 			}
 
-			if ( opt.overflow != null ) {
-				this.style.overflow = "hidden";
+			if ( opt.overflowX != null ) {
+				this.style.overflowX = "hidden";
+			}
+			if ( opt.overflowY != null ) {
+				this.style.overflowY = "hidden";
 			}
 
 			opt.curAnim = jQuery.extend({}, prop);