How can i do hide folder in window 7?

Open any folder and from menu bar (press 'alt' key if menu bar is not visible) select Tools > Folder Options. A small pop up window will appear, switch to 'view' tab and find 'Don't show hidden files, folder or drives' under Hidden files and folder option click on it and then click 'ok'. Now right click on the desired folder and select 'properties', in the general tab check the option 'hidden' and click 'ok'. Press F5 once or refresh via right click and folder or file will disappear.