Create GUI elements outside of GUI.Window

I have tooltip code which is called within a GUI.Window callback. The code creates some GUI elements, but I want those elements to be 'outside' of the window, so it is not limited in size due to the window size. How would I go about doing this? Thanks

EDIT: Upon further investigation, the GUI.tooltip is not set outside of the gui.window callback. It is set within the callback though, does a GUI.Window get its own GUI instance?

I draw tooltips from an OnGUI that is outside of the window callback. Basically all the windows put their GUI.tooltip into a common spot that is accessed by the tooltip-drawing-OnGUI. Then they can be anywhere.