+
+" Relative numbers
+autocmd FocusLost * :set number
+autocmd InsertEnter * :set number
+autocmd InsertLeave * :set relativenumber
+autocmd CursorMoved * :set relativenumber
+
+function! NumberToggle()
+ if(&relativenumber == 1)
+ set number
+ else
+ set relativenumber
+ endif
+endfunction
+
+nnoremap <C-n> :call NumberToggle()<cr>