diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index ba9d205ce..f5d66cd3f 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -950,10 +950,16 @@ $(function(){
                 return;
             }
 
-            if(res.length<1){
-                return;
+            if (res.err == -2) {
+              alert("该作业没有任何附件可下载");
+              return;
             }
 
+            if(res.length < 1 ){
+                alert("该作业没有任何附件可下载");
+                return;
+            }
+            
             if(res.length==1){
               if(res[0].base64file){
                 location.href = encodeHomeworkUrl(res[0].base64file, true);return;
@@ -983,10 +989,22 @@ $(function(){
     $('#download_homework_attachments').bind('ajax:complete', function (event, data, status, xhr) {
         if(status == 'success'){
             var res = JSON.parse(data.responseText);  
-            if(res.length == null){
-                alert("该作业没有任何附件可下载");
+
+            if(res.err == -1){
+                var htmlvalue = '<div id="muban_popup_box" style="width:auto;"><div class="muban_popup_top"><h3 class="fl">温馨提示</h3><a href="javascript:void(0);" class="muban_icons_close fr"></a></div>'+
+                    '<div class="clear mt15 mr10 ml10"><p class="text_c f14">因附件资源太大，请通过微信或者QQ联系Trustie管理员</br>辅助您完成下载</p><div class="cl"></div>'+
+                    '<a href="javascript:void(0);" class="fr sy_btn_blue mt10" style="margin-right: 143px;" onclick="hideModal();">确&nbsp;&nbsp;定</a></div></div>';
+                pop_box_new(htmlvalue,380,166);
+                return;
             }
-            else if(res.length<1){
+
+            if (res.err == -2) {
+              alert("该作业没有任何附件可下载");
+              return;
+            }
+
+            if(res.length < 1 ){
+                alert("该作业没有任何附件可下载");
                 return;
             }
             else