How do I create a Non-Modal Pop-Up Window

The DoModal() function creates a modal pop-up window.  The user must perform some activity to continue. The Transfer() function sends you to a new component in a separate window (if desired).

Is there a delivered way to create a NON-MODAL pop-up? That is, user click's "X", a pop-up appears, and they can ignore it. I assume it can be done with iScript but I'd rather do it a delivered way.