统计代码异步执行

@@ -30,6 +30,7 @@ var _hmt = _hmt || [];
         (function() {
             var hm = document.createElement("script");
             hm.src = "http://static.yohobuy.com/js/analytics/analysis.js";
+            hm.async = 1;
             var s = document.getElementsByTagName("script")[0];
             s.parentNode.insertBefore(hm, s);
         })();