解决安卓扫码问题
diff --git a/www/js/billdetail.js b/www/js/billdetail.js
index 3615234..51579aa 100644
--- a/www/js/billdetail.js
+++ b/www/js/billdetail.js
@@ -9,7 +9,8 @@
         this.loadBill()
     },
     toBack: function (){
-        window.history.back();
+        //window.history.back();
+        window.history.go(-1)
     },
     loadBill: function() {
         var refno = window.localStorage.getItem("currentrefno");