diff --git a/src/support.js b/src/support.js
index 1001f407a..2657a182f 100644
--- a/src/support.js
+++ b/src/support.js
@@ -254,7 +254,9 @@ jQuery.support = (function() {
 			div.firstChild.style.width = "5px";
 			support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
 
-			container.style.zoom = 1;
+			// Prevent IE 6 from affecting layout for positioned elements #11048
+			// Prevent IE from shrinking the body in IE 7 mode #12869
+			body.style.zoom = 1;
 		}
 
 		// Null elements to avoid leaks in IE