diff --git a/public/javascripts/course.js b/public/javascripts/course.js
index c0c761bfa..cc57279f0 100644
--- a/public/javascripts/course.js
+++ b/public/javascripts/course.js
@@ -527,3 +527,44 @@ function search_tag_attachment(url,tag_name,q,course_id,sort)
         }
     );
 }
+
+// 课程讨论区
+function showhelpAndScrollToMessage(id, id1, count) {
+    $('#' + id).toggle();
+    if(cookieget("repositories_visiable") == "true")
+    {
+        cookiesave("repositories_visiable", false,'','','');
+    }
+    else
+    {
+        cookiesave("repositories_visiable", true,'','','');
+    }
+    var information = $(id1);
+    var val = information.attr("value");
+    if(val=="show_help")
+    {
+        $(id1).text("收起回复(" + count + ")" );
+        information.attr("value", "hide_help");
+    }
+    else
+    {
+        $(id1).text("展开回复(" + count + ")");
+        information.attr("value", "show_help");
+    }
+}
+function show_more_reply(contentid, id2, id3) {
+    $(contentid).toggleClass("course_description_none");
+    var information = $(id2);
+    var arrow = $(id3);
+    var val = information.attr("value");
+    if (val == "show_more") {
+        $(id2).text("[收起]");
+        information.attr("value", "hide_more");
+        arrow.attr("src", "/images/jiantouup.jpg")
+    }
+    else {
+        $(id2).text("[展开]");
+        information.attr("value", "show_more");
+        arrow.attr("src", "/images/jiantou.jpg")
+    }
+}
\ No newline at end of file