--- a/.vimrc	Tue Jan 27 21:18:37 2015 +0800
+++ b/.vimrc	Tue Jan 27 21:34:32 2015 +0800
@@ -61,8 +61,8 @@
 vnoremap > >gv
 
 " bubble lines
-nmap <C-Up> ddkP
-nmap <C-Down> ddp
+nnoremap <C-Up> :move .-2<CR>
+nnoremap <C-Down> :move .+1<CR>
 
 " show column
 nnoremap <F3> :setlocal cursorcolumn! cursorcolumn?<CR>