Speed up reflink popup animation

boards/static/js/refpopup.js

@@ -80,7 +80,7 b' function showPostPreview(e) {'
     $del(doc.getElementById(cln.id));
 
     //add preview
-    $(cln).fadeIn();
+    $(cln).fadeIn(200);
     $('body').append(cln);
 }