Index: src/fx/fx.js
===================================================================
--- src/fx/fx.js	(revision 1562)
+++ src/fx/fx.js	(working copy)
@@ -38,11 +38,14 @@
 			hidden.animate({
 				height: "show", width: "show", opacity: "show"
 			}, speed, callback) :
-			
+
 			hidden.each(function(){
 				this.style.display = this.oldblock ? this.oldblock : "";
-				if ( jQuery.css(this,"display") == "none" )
-					this.style.display = "block";
+				if ( jQuery.css(this,"display") == "none" ) {
+					var elem = jQuery("<"+this.tagName.toLowerCase()+">").appendTo("body");
+					this.style.display = elem.css("display");
+					elem.remove();
+				}
 			});
 		return this;
 	},