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)
1 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")
2 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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