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Color, Filters, and Other Style Sheet Properties


Continuing with our multi-part series on style sheet properties, this fourth part of the series covers color, filters, and more. It is excerpted from chapter four of Dynamic HTML: The Definitive Reference, Third Edition, written by Danny Goodman (O'Reilly; ISBN: 0596527403). Copyright © 2006 O'Reilly Media, Inc. All rights reserved. Used with permission from the publisher. Available from booksellers or direct from O'Reilly Media.

Author Info:
By: O'Reilly Media
Rating: 5 stars5 stars5 stars5 stars5 stars / 12
September 20, 2007
TABLE OF CONTENTS:
  1. · Color, Filters, and Other Style Sheet Properties
  2. · Alphabetical Property Reference: Cursor
  3. · Alphabetical Property Reference: Elevation
  4. · Alphabetical Property Reference: Filters

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Color, Filters, and Other Style Sheet Properties - Alphabetical Property Reference: Elevation
(Page 3 of 4 )

 

elevation
IE n/a NN n/a Moz n/a Saf n/a Op n/a CSS 2

Inherited: No

Given a listener at the center of a three-dimensional sound space (like in a surround-sound-equipped theater), elevation sets the vertical angle of the source of the sound (for example, in a text-to-speech browser). See also the azimuth property.

CSS Syntax

elevation: angle | angleConstant

Value

Your choice of a specific angle (in degrees) or one of the five constant values. An angle value is any value in the range of –90 to +90 (inclusive) plus the letters “deg”, as in 90deg . The value 0deg is at the same vertical level as the listener’s ear. To set the angle above level, the value must be a positive value ( 45deg ); below level requires a negative value ( -45deg ). Optionally, you can choose an angleConstant value from a library of descriptions that correspond to fixed points above and below level.

Value

Equals

above

90deg (directly overhead)

below

-90deg (directly beneath)

higher

+10 degrees from current

level

0deg (at listener’s ear level)

lower

–10 degrees from current

In combination with the azimuth property, you can place a sound at any point around a spherical surround-sound stage.

Initial Value       level

Example

h1 {elevation: -45deg}
p.heavenly {elevation: above}

Applies To                   All elements.

empty-cells
IE n/a NN n/a Moz all Saf 1.3/2 Op 8 CSS 2

Inherited: No

Controls whether an empty td element shows its borders and background in a table. Surrounding cells don’t change position when an empty cell is hidden. Instead, the cell is essentially transparent, allowing the table’s background to show through in the space.

CSS Syntax

empty-cells: show | hide

Value                 One of two constants: show | hide .

Initial Value      sho w

Example     td {border: salmon inset 3px; empty-cells: hide}

Applies To    td elements .


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