eclim (eclipse + vim) auto-completion

When I use eclim's auto-completion features in headless mode, it opens the regular auto-completion little window but also opens a separate scratch preview window to show the overloaded functions. How can I not let the scratch window show up? (like just have every开发者_如何学Pythonthing in the little auto-completion window)

set cot-=preview 

in ur vimrc

Also could do the following your vimrc

set cot=menu