How to have a window on all workspaces?

I'm using Precise (12.04.1) and I'm using Unity. I have 3 workspaces. I want a particular window/application (say firefox) to be present on all workspaces.

This is easy to do on something like LXDE (e.g. Lubuntu) where I just have to right-click the titlebar and select "show on all workspaces". Then no matter which workspace I move to, the desired window/app is present on each one.

I can't find a way to do this in Unity. Please help.

Solution 1:

You have to right-click on the title bar, when the window is not maximized and select "Always on visible workspace"

Solution 2:

Pressing alt+space will display a menu where you will find "Always on visible workspace".

Solution 3:

If it's a chrome window, then you need to right click on the title bar, choose "use system title bar and and borders". Then you get a new title bar, right click on it and choose - always on visible workplace.