diff --git a/public/stylesheets/css/courses.css b/public/stylesheets/css/courses.css
index f91109247..1057e3cf7 100644
--- a/public/stylesheets/css/courses.css
+++ b/public/stylesheets/css/courses.css
@@ -46,9 +46,9 @@ a.FilesName02{ max-width:665px;overflow:hidden; white-space:nowrap; text-overflo
 
 a.UsersEditBtn{ display:block; width:55px; height:20px; border:1px solid #6d6d6d; color:#fff; background:#888888 url(/images/homepage_icon.png) -11px -35px no-repeat; padding-left:25px; line-height:1.9;-moz-border-radius:2px;  -webkit-border-radius:2px;  border-radius:2px;}
 a:hover.UsersEditBtn{ color:#484848;  background:#888888 url(/images/homepage_icon2.png) -11px -74px no-repeat;}
-a.UsersAttBtn{ display:block; width:55px; height:20px; border:1px solid #d3d3d3; color:#888888; background:#f2f3f3 url(../images/homepage_icon2.png) -9px -6px no-repeat; padding-left:25px; line-height:1.9;-moz-border-radius:2px;  -webkit-border-radius:2px;  border-radius:2px;}
+a.UsersAttBtn{ display:block; width:55px; height:20px; border:1px solid #d3d3d3; color:#888888; background:#f2f3f3 url(/images/homepage_icon2.png) -9px -6px no-repeat; padding-left:25px; line-height:1.9;-moz-border-radius:2px;  -webkit-border-radius:2px;  border-radius:2px;}
 a:hover.UsersAttBtn{border:1px solid #888888; }
-a.UsersApBtn{ display:block; width:55px; height:20px; border:1px solid #d3d3d3; color:#888888; background:#f2f3f3 url(../images/homepage_icon2.png) -177px -6px no-repeat; padding-left:25px; line-height:1.9;-moz-border-radius:2px;  -webkit-border-radius:2px;  border-radius:2px;}
+a.UsersApBtn{ display:block; width:55px; height:20px; border:1px solid #d3d3d3; color:#888888; background:#f2f3f3 url(/images/homepage_icon2.png) -177px -6px no-repeat; padding-left:25px; line-height:1.9;-moz-border-radius:2px;  -webkit-border-radius:2px;  border-radius:2px;}
 a:hover.UsersApBtn{border:1px solid #888888; }
 
 /* 代码查重弹框 */