update

@@ -11,7 +11,8 @@ var $nav = $('.category-nav'),
     $categoryContainer = $('.category-container'),
     $contents = $categoryContainer.children('.content');
 
-var $curContent = $contents.not('.hide');
+var $curContent = $contents.not('.hide'),
+    $curClickSubLevel;
 
 var navHammer, ccHammer;
 
@@ -72,6 +73,7 @@ ccHammer.on('tap', function(e) {
 
 $('.sub-level').bind('touchstart', function(e) {
     var $cur = $(e.target);
+
     $cur.addClass('a-highlight');
 
     if ($curClickSubLevel) {