refreshMineCount performance improvement

index.html

@@ -371,25 +371,17 @@
 
 				function refreshMineCounts() {
 					$('li.revealed:not(.mine)').each(function() {
-						$(this).text(
-							$(this).countMinesText()
-						);
+						var mineCount = $(this).countMinesText();
+						
+						$(this).text(mineCount);
 
 						//remove "mines1" etc
-
-						var mine = $(this).hasClass("mine");
-
-						$(this).removeAttr("class");
-
-						if (mine) {
-							$(this).addClass("mine");
-						} else {
-							$(this).addClass(
-								"mines" + $(this).countMinesText()
+						$(this).attr(
+							'class', 
+							$(this).attr('class').replace(
+								/mines[0-9]/, "mines" + mineCount
+							)
 						);
-						}
-
-						$(this).addClass("revealed");
 					});
 				}