diff --git a/chapter2/mysite/myapp/static/scripts/trend.js b/chapter2/mysite/myapp/static/scripts/trend.js
index 3382801..55c61d5 100755
--- a/chapter2/mysite/myapp/static/scripts/trend.js
+++ b/chapter2/mysite/myapp/static/scripts/trend.js
@@ -237,12 +237,12 @@ $(function(){
    var histogramChart3_datas =[];
    var histogramChart3_rates =[];
    for(var key in top10_sells){
-    var base = top10_sells[0];
-    var data = top10_sells[key];
-    histogramChart3_names.push(data['product_name'].substring(0,10));
-    histogramChart3_datas.push(data['good_c']);
-    var rate = data['good_c'] * 100 / base['good_c'];
-    histogramChart3_rates.push(rate.toFixed(0));
+      var base = top10_sells[0];
+      var data = top10_sells[key];
+      histogramChart3_names.push(data['product_name'].substring(0,20));
+      histogramChart3_datas.push(data['good_c']);
+      var rate = data['good_c'] * 100 / base['good_c'];
+      histogramChart3_rates.push(rate.toFixed(0));
    }