Always on Visible Workspace (or Sticky) button for Unity

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http://askubuntu.com – I would like to have the ability to have a button in Unity windows that causes the window to appear on all workspaces. I know you can accomplish this by accessing the window menu and clicking 'Always on Visible Workspace' but I'd like a button like close, minimize, maximize. I know when I first came to linux this feature existed on most window managers but it seems that it's been slowly disappearing. Is there a way to bring this back? P.S. The purpose of this is to have a button in the window titlebar that accomplishes this task. I know this is possible through keyboard shortcuts and the (HowTos)