ActionScript 2.0 Language Reference - Adobe Help and Support

style:Object - An object that describes the style, or null.
Example
The following example adds a style named emphasized to the StyleSheet myStyleSheet. The
style includes two style properties: color and fontWeight. The style object is defined with
the {} operator.
myStyleSheet.setStyle("emphasized", {color:'#000000',fontWeight:'bold'});
You could also create a style object using an instance of the Object class, and then pass that
object (styleObj) as the style parameter, as the next example shows:
import TextField.StyleSheet;
var my_styleSheet:StyleSheet = new StyleSheet();
var styleObj:Object = new Object();
styleObj.color = "#000000";
styleObj.fontWeight = "bold";
my_styleSheet.setStyle("emphasized", styleObj);
delete styleObj;
var styleNames_array:Array = my_styleSheet.getStyleNames();
for (var i=0;i