Enjoy the overlibmws DHTML Popup Library and master its commands.
The above two links invoke and close popups in the parent document via parent.overlib() and parent.nd(time) function calls.  The left one is STICKY with NOCLOSE, and its content includes a link with overlib2() and nd2() function calls, which also are executed in the parent document by virtue of being in a parent.overlib() function call. 
 
The next three links instead invoke popups via overlib() function calls within this iframe document and have FRAME,parent specified to handle them in the parent document.  They thus are not bound by the margins of the embedded iframe window, but nonetheless can use cursor-based positioning:
Enjoy the overlibmws DHTML Popup Library and master its commands, e.g., NOCLOSE.

The next three image links also invoke popups via overlib() function calls within this iframe document, but without a FRAME command and parameter for the parent document, whereas the STICKY Copyright link does use FRAME,parent.

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