ActionScript: The Definitive Guide

Global Properties

Global properties, like global functions, may be accessed from any script in a movie. They store information that is generally useful, from any point in our code. Many of them affect the entire Flash Player, not just a particular movie clip or movie.

Table 20.2 lists the global properties available in Flash 5.

Table 20-2. ActionScript Global Properties

Property Name	Description
_focusrect	The highlight state of buttons activated via the keyboard
_highquality	The rendering quality of the Player*
Infinity	A constant representing the Infinity value of the number type
-Infinity	A constant representing the -Infinity value of the number type
_level n	A document level in the Player
NaN	Not-A-Number; the value of the number type representing invalid numeric data
_quality	The rendering quality of the Player
_root	A reference to the main movie timeline of the current level
_soundbuftime	Number of seconds of a streaming sound to preload
$version*	The version of the Flash Player

*Deprecated in Flash 5.