Properly cascade blank tiles on clearing a row

index.html

@@ -209,6 +209,9 @@
 
 						//refresh last row to reflect new rows beneath
 						$('li.revealed').last().parent().children('li.revealed').mousedown();
+
+						//click blank tiles
+						$('li.revealed:not(.mine):empty').mousedown();
 					});
 
 					$('ul:hidden').show();