Basic HTML version of Foils prepared 11 March 99

Foil 56 DHTML 1) Define Layers -- I

From Overview of JavaScript II -- From Cookies to Dynamical HTML CPS616 Technologies of the Information Age -- Spring Semester 99. by Geoffrey C. Fox (Tom Scavo)


The first step is to define different named entities in document.
  • The picture shows 6 entities labeled 0 1 2 3 4 5
  • 0 is main window
  • Others subsidiary windows 1-ɱ
  • 4 is layered above 3 and 5
  • There could be other hidden named entities -- either because they had CSS-P visibility attribute set to hidden or because they were completely underneath other named windows
  • Entities could either be scattered around -- seemingly at random or aligned precisely w.r.t. other positionable parts of document



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