ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
Global properties, like global functions, can 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 18-2 lists the global properties available in Flash 6, including the new global property _global. All other global properties listed in the table are available in Flash 5 as well.
Table 18-2. ActionScript global properties
Property name
Description
_focusrect
The highlight state of buttons activated via the keyboard
_global[3]
A reference to the global object
_highquality[4]
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
_leveln
A document level in the Player, such as _level0
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[4]
The version of the Flash Player
[3] Supported in Flash 6, but not in prior versions.
