diff --git a/module/doc/view/content.html.php b/module/doc/view/content.html.php
index 2a881c9abd..1222e6aaab 100644
--- a/module/doc/view/content.html.php
+++ b/module/doc/view/content.html.php
@@ -109,7 +109,7 @@
           </div>
           <?php endif;?>
         </div>
-        <div class="">
+        <div id="diffContain">
           <div class="detail-content article-content table-col">
             <div class='info'>
               <?php $createInfo = $doc->status == 'draft' ? zget($users, $doc->addedBy) . " {$lang->colon} " . substr($doc->addedDate, 0, 10) . (common::checkNotCN() ? ' ' : '') . $lang->doc->createAB : zget($users, $doc->releasedBy) . " {$lang->colon} " . substr($doc->releasedDate, 0, 10) . (common::checkNotCN() ? ' ' : '') . $lang->doc->release;?>
diff --git a/module/doc/view/lefttree.html.php b/module/doc/view/lefttree.html.php
index 18c97642cb..0b88bdc59e 100644
--- a/module/doc/view/lefttree.html.php
+++ b/module/doc/view/lefttree.html.php
@@ -182,6 +182,7 @@ $(function()
     };
 
     var versionsData = {};
+    var visibleSort  = false;
 
     /**
      * Render Dropdown dom.
@@ -406,13 +407,15 @@ $(function()
             return locatePage(libID, moduleID, $(this).data('type'));
         }).on('mousedown', 'a.sort-module', function()
         {
+            visibleSort = true;
             var $element = $(this);
             setTimeout(function()
             {
-                $element.addClass('dragging-shadow');
+                if(visibleSort) $element.addClass('dragging-shadow');
             }, 500);
         }).on('mouseup', 'a.sort-module', function()
         {
+            visibleSort = false;
             $('a.sort-module').removeClass('dragging-shadow');
         }).on('click', '.tree-version-trigger', function(e)
         {
@@ -672,8 +675,10 @@ $(function()
         nested: true,
         selector: 'li',
         dragCssClass: 'drop-here',
+        noShadow: false,
         start: function()
         {
+            visibleSort = false;
             $('#dropDownCatalogue').remove();
             $('a.sort-module').removeClass('dragging-shadow');
         },
@@ -697,7 +702,9 @@ $(function()
         },
         finish: function(e)
         {
-            $('a.sort-module').removeClass('dragging-shadow');
+            visibleSort = false;
+            e.target.siblings().find('a.sort-module').removeClass('dragging-shadow');
+
             if(!e.changed) return;
 
             var orders     = {};