diff --git a/module/bug/control.php b/module/bug/control.php
index 627a5e9993..729a18c41f 100644
--- a/module/bug/control.php
+++ b/module/bug/control.php
@@ -529,6 +529,13 @@ class bug extends control
         }
     }
 
+    /* 删除一个文件。*/
+    public function deleteFile($fileID)
+    {
+        $this->dao->delete()->from(TABLE_FILE)->where('id')->eq($fileID)->exec();
+        die(js::reload('parent'));
+    }
+
     /* 保存模板。*/
     public function saveTemplate()
     {
diff --git a/module/bug/view/view.html.php b/module/bug/view/view.html.php
index 4b3e942305..74b4d7509e 100644
--- a/module/bug/view/view.html.php
+++ b/module/bug/view/view.html.php
@@ -23,6 +23,7 @@
  */
 ?>
 <?php include '../../common/view/header.html.php';?>
+<?php include '../../file/view/download.html.php';?>
 
 <div class='yui-d0'>
   <div id='titlebar'>
@@ -56,7 +57,15 @@
       </fieldset>
       <fieldset>
         <legend><?php echo $lang->bug->legendAttatch;?></legend>
-        <div><?php foreach($bug->files as $file) echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank');?></div>
+        <div>
+        <?php
+        foreach($bug->files as $file)
+        {
+            echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank', "onclick='return downloadFile($file->id)'");
+            echo html::commonButton('x', "onclick=deleteFile($file->id)");
+        }
+        ?>
+        </div>
       </fieldset>
       <?php include '../../common/view/action.html.php';?>
       <div class='a-center' style='font-size:16px; font-weight:bold'>
diff --git a/module/doc/view/view.html.php b/module/doc/view/view.html.php
index 1879540ccc..97ea146ffa 100644
--- a/module/doc/view/view.html.php
+++ b/module/doc/view/view.html.php
@@ -23,14 +23,8 @@
  */
 ?>
 <?php include '../../common/view/header.html.php';?>
-<script language='Javascript'>
-/* 删除文件。*/
-function deleteFile(fileID)
-{
-    if(!fileID) return;
-    hiddenwin.location.href =createLink('doc', 'deleteFile', 'fileID=' + fileID);
-}
-</script>
+<?php include '../../file/view/download.html.php';?>
+</style>
 <div class='yui-d0'>
   <table class='table-1'>
   <caption><?php echo $doc->title . $lang->colon . $lang->doc->view;?></caption>
@@ -57,13 +51,13 @@ function deleteFile(fileID)
     <tr>
       <th class='rowhead'><?php echo $lang->files;?></th>
       <td>
-        <?php 
-        foreach($doc->files as $file)
-        {
-            echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank');
-            echo html::commonButton('x', "onclick=deleteFile($file->id)");
-        }
-        ?>
+      <?php 
+      foreach($doc->files as $file)
+      {
+          echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank', "onclick='return downloadFile($file->id)'");
+          echo html::commonButton('x', "onclick=deleteFile($file->id)");
+      }
+      ?>
       </td>
     </tr>
   </table>
diff --git a/module/file/control.php b/module/file/control.php
index c00e8437a9..26961c8853 100644
--- a/module/file/control.php
+++ b/module/file/control.php
@@ -32,11 +32,35 @@ class file extends control
     }
 
     /* 下载一个文件。*/
-    public function download($fileID)
+    public function download($fileID, $mouse = '')
     {
         $file = $this->file->getById($fileID);
-        if(file_exists($file->realPath))$this->locate($file->webPath);
-        $this->app->error("The file you visit $fileID not found.", __FILE__, __LINE__, true);
+        $fileTypes = array('txt', 'jpg', 'jpeg', 'gif', 'png', 'bmp', 'xml', 'html');
+        foreach($fileTypes as $fileType)
+        {
+            if($file->extension == $fileType)
+            {
+                $download = 'false';
+                break;
+            }
+        }
+        if(isset($download) && $mouse == 'left')
+        {
+            if(file_exists($file->realPath))$this->locate($file->webPath);
+            $this->app->error("The file you visit $fileID not found.", __FILE__, __LINE__, true);
+        }
+        else
+        {
+            if(file_exists($file->realPath))
+            {
+                $fileName = $file->title . '.' . $file->extension;
+                header('Content-type: application/octet-stream');
+                header("Content-Disposition: attachment; filename=$fileName");
+                $fileData = file_get_contents($file->realPath);
+                echo $fileData;
+            }
+            $this->app->error("The file you visit $fileID not found.", __FILE__, __LINE__, true);
+        }
     }
 
     /* 导出csv格式的文件。*/
diff --git a/module/file/view/download.html.php b/module/file/view/download.html.php
new file mode 100644
index 0000000000..af7841f56c
--- /dev/null
+++ b/module/file/view/download.html.php
@@ -0,0 +1,19 @@
+<style>
+.button-c {padding:1px}
+</style>
+<script language='Javascript'>
+/* 删除文件。*/
+function deleteFile(fileID)
+{
+    if(!fileID) return;
+    hiddenwin.location.href =createLink('doc', 'deleteFile', 'fileID=' + fileID);
+}
+/* 下载文件。*/
+function downloadFile(fileID){
+    if(!fileID) return;
+    var URL = createLink('file', 'download', 'fileID=' + fileID + '&mouse=left');
+    window.open(URL, '_blank');
+    return false;
+}
+</script>
+
diff --git a/module/story/control.php b/module/story/control.php
index 44267e6159..8450a75fe9 100644
--- a/module/story/control.php
+++ b/module/story/control.php
@@ -223,6 +223,13 @@ class story extends control
         }
     }
 
+     /* 删除一个文件。*/
+    public function deleteFile($fileID)
+    {
+        $this->dao->delete()->from(TABLE_FILE)->where('id')->eq($fileID)->exec();
+        die(js::reload('parent'));
+    }
+   
     /* 评审一条需求。*/
     public function review($storyID)
     {
diff --git a/module/story/view/view.html.php b/module/story/view/view.html.php
index d26eb1cca8..f379775ee1 100644
--- a/module/story/view/view.html.php
+++ b/module/story/view/view.html.php
@@ -23,6 +23,7 @@
  */
 ?>
 <?php include '../../common/view/header.html.php';?>
+<?php include '../../file/view/download.html.php';?>
 
 <div class='yui-d0'>
   <div id='titlebar'>
@@ -54,7 +55,15 @@
       </fieldset>
       <fieldset>
         <legend><?php echo $lang->story->legendAttatch;?></legend>
-        <div><?php foreach($story->files as $file) echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank');?></div>
+        <div>
+        <?php 
+        foreach($story->files as $file)
+        {
+            echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank', "onclick='return downloadFile($file->id)'");
+            echo html::commonButton('x', "onclick=deleteFile($file->id)");
+        }
+        ?>
+        </div>
       </fieldset>
       <?php include '../../common/view/action.html.php';?>
       <div class='a-center' style='font-size:16px; font-weight:bold'>
diff --git a/module/task/control.php b/module/task/control.php
index 2cf964117b..13a224b8e3 100644
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -303,6 +303,13 @@ class task extends control
         }
     }
 
+    /* 删除一个文件。*/
+    public function deleteFile($fileID)
+    {
+        $this->dao->delete()->from(TABLE_FILE)->where('id')->eq($fileID)->exec();
+        die(js::reload('parent'));
+    }
+
     /* 发送邮件。*/
     private function sendmail($taskID, $actionID)
     {
diff --git a/module/task/view/view.html.php b/module/task/view/view.html.php
index efa2e307a8..c7d1cf3f6f 100644
--- a/module/task/view/view.html.php
+++ b/module/task/view/view.html.php
@@ -23,6 +23,7 @@
  */
 ?>
 <?php include '../../common/view/header.html.php';?>
+<?php include '../../file/view/download.html.php';?>
 
 <div class='yui-d0'>
   <div id='titlebar'>
@@ -57,7 +58,15 @@
       </fieldset>
       <fieldset>
         <legend><?php echo $lang->files;?></legend>
-        <div><?php foreach($task->files as $file) echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank');?></div>
+        <div>
+        <?php
+        foreach($task->files as $file)
+        {
+            echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank', "onclick='return downloadFile($file->id)'");
+            echo html::commonButton('x', "onclick=deleteFile($file->id)");
+        }
+        ?>
+        </div>
       </fieldset>
       <?php include '../../common/view/action.html.php';?>
       <div class='a-center f-16px strong'>
diff --git a/module/testcase/control.php b/module/testcase/control.php
index 03018a7bba..7ed0514d00 100644
--- a/module/testcase/control.php
+++ b/module/testcase/control.php
@@ -255,6 +255,13 @@ class testcase extends control
         }
     }
 
+    /* 删除一个文件。*/
+    public function deleteFile($fileID)
+    {
+        $this->dao->delete()->from(TABLE_FILE)->where('id')->eq($fileID)->exec();
+        die(js::reload('parent'));
+    }
+
     /* 确认需求变动。*/
     public function confirmStoryChange($caseID)
     {
diff --git a/module/testcase/view/view.html.php b/module/testcase/view/view.html.php
index 20b7d3a3ec..dd6e1dfddf 100644
--- a/module/testcase/view/view.html.php
+++ b/module/testcase/view/view.html.php
@@ -24,6 +24,7 @@
 ?>
 <?php include '../../common/view/header.html.php';?>
 <?php include '../../common/view/colorize.html.php';?>
+<?php include '../../file/view/download.html.php';?>
 <div class='yui-d0'>
   <div id='titlebar' <?php if($case->deleted) echo "class='deleted'";?>>
     CASE #<?php echo $case->id . $lang->colon . $case->title;?>
@@ -66,7 +67,15 @@
       </fieldset>
       <fieldset>
         <legend><?php echo $lang->testcase->legendAttatch;?></legend>
-        <div><?php foreach($case->files as $file) echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank');?></div>
+        <div>
+        <?php
+        foreach($case->files as $file)
+        {
+            echo html::a($this->createLink('file', 'download', "fileID=$file->id"), $file->title, '_blank', "onclick='return downloadFile($file->id)'");
+            echo html::commonButton('x', "onclick=deleteFile($file->id)");
+        }
+        ?>
+        </div>
       </fieldset>
 
       <?php include '../../common/view/action.html.php';?>