Basic HTML version of Foils prepared 11 March 99

Foil 57 DHTML 1) Define Layers -- II

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 position CSSP attribute takes values static (default) relative (position relative to where it "should be" in current "context") and absolute (position in current "context")
These are properties of essentially ALL document components in the "DOM of our dreams"
  • However in today's pragmatic world, one can only use for some HTML tags
  • <DIV> and <SPAN> (<<---- USE THESE!) are supported today by Microsoft and Netscape and are part of HTML4
  • <LAYER> is best "name" (so lets call them layers)and fully supported by Netscape; it is not part of HTML4 and not supported by Microsoft
  • <IFRAME> (internal frame) is not in Netscape4 but is in HTML4 and supported by Microsoft

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