Index: src/fx.js
===================================================================
--- src/fx.js	(revision 6414)
+++ src/fx.js	(working copy)
@@ -22,6 +22,7 @@
 		if ( speed ) {
 			return this.animate( genFx("show", 3), speed, callback);
 		} else {
+			var tmpDiv;
 			for ( var i = 0, l = this.length; i < l; i++ ){
 				var old = jQuery.data(this[i], "olddisplay");
 				
@@ -33,8 +34,11 @@
 					if ( elemdisplay[ tagName ] ) {
 						display = elemdisplay[ tagName ];
 					} else {
-						var elem = jQuery("<" + tagName + " />").appendTo("body");
-						
+						if ( !tmpDiv ) {
+							tmpDiv = jQuery("<div/>").appendTo("body");
+						}
+						var elem = jQuery("<" + tagName + " />").appendTo(tmpDiv);
+
 						display = elem.css("display");
 						if ( display === "none" )
 							display = "block";
@@ -47,6 +51,9 @@
 					jQuery.data(this[i], "olddisplay", display);
 				}
 			}
+			if ( tmpDiv ) {
+				tmpDiv.remove();
+			}
 
 			// Set the display of the elements in a second loop
 			// to avoid the constant reflow