diff --git a/static/js/custom.js b/static/js/custom.js
index 8a71f68c..7d0dc084 100755
--- a/static/js/custom.js
+++ b/static/js/custom.js
@@ -2,14 +2,13 @@
 var lang = $("html").attr("lang").split("-")[0].toLowerCase();
 
 var content;
+// get editPage element's parent element's href
+var sourceUrl = $("#editPage").parent().attr("href");
 if (lang == "zh") {
     content = "<div>查看<a href='" + sourceUrl + "' target='_blank'>源文档</a></div><div>修改文档请参考<a href='/share_docs/zh/' target='_blank'>贡献编辑文档指南</a></div>";
 } else {
     content = "<div>View <a href='" + sourceUrl + "' target='_blank'>source doc</a></div><div>For editing, please refer to <a href='/share_docs/en/' target='_blank'>contribution guide</a></div>";
 }
-
-// get editPage element's parent element's href
-var sourceUrl = $("#editPage").parent().attr("href");
 // add editPageHelp after editPage's parent element
 $("#editPage").parent().after("<div id='editPageHelp' style='display:none;'>" + content + "</div>");
 // remove editPage element's href and add click event