" User interface
" set guioptions-=e "Gui tab off if gvim
set guioptions+=c "GUI dialog off if gvim
set guioptions-=T "GUI toolbar off if gvim
set guioptions-=m "GUI menu hide
set lines=48 columns=165 " Window size
set mouse=a

"GUI scroll hide
set guioptions+=LlRrb
set guioptions-=LlRrb

" Hot keys show/hide gui menu
function MyToggleMenu()
  let old_guioptions = &guioptions

  if stridx(old_guioptions, 'm') != -1
    set guioptions-=m
  else
    set guioptions+=m
  endif
endfunction

nmap <C-m> :call MyToggleMenu()<CR>
vmap <C-m> <ESC>:call MyToggleMenu()<CR>