Fixes a Safari issue with the JSON sample. This is a follow up commit
to r1147 that adds some needed CSS.

Patch by: bobv
Review by: knorton



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1160 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/samples/json/src/com/google/gwt/sample/json/public/JSON.css b/samples/json/src/com/google/gwt/sample/json/public/JSON.css
index c51ca84..6418587 100644
--- a/samples/json/src/com/google/gwt/sample/json/public/JSON.css
+++ b/samples/json/src/com/google/gwt/sample/json/public/JSON.css
@@ -8,6 +8,10 @@
 	margin-top: 3px;
 }
 
+table {
+	empty-cells: hide;
+}
+
 .intro {
 	border: 1px solid #C3D9FF;
 	background-color: #E8EEF7;