Add border-radius to growlUI messages

Please add standard CSS3 property for border radius:

--- uc_ajax_cart.js.orig        2011-06-24 15:59:53.000000000 +0400
+++ uc_ajax_cart.js     2011-06-27 20:43:21.234684641 +0400
@@ -309,6 +309,7 @@
         backgroundColor: '#000',
         '-webkit-border-radius': '10px',
         '-moz-border-radius': '10px',
+        'border-radius': '10px',
         color: '#fff',
         opacity: 1
       }