alignment will control how the object is aligned, working together with hOffset. alignment also is a synonym of hAlign, so never use both.
Possible Values: Edit
myObjectName.alignment = "center";
The height attribute controls the vertical dimension of the box model, or how high it looks on the screen.
If Omitted: The height of the box defaults to a value of -1 and the box height is then automatically determined.
myObjectName.height = 30;
<height = "30" />
the horizontal offset of the object
myObjectName.hOffset = 44;
object.name = "myObjectName";
opacity controls the opacity =)
It is a range from 0 to 255. 0 being invisible and 255 being completely opaque.
To hide an object, a common practice is to set its opacity to 0. But these days, the 'visible' property is the better thing to use, as you don't have to track the previous opacity to restore it later.
To hide an object but still interact with it, it's common practice to set its opacity to 1. See also: object tracking
myObjectName.opacity = 200;
vOffset controls the vertical placement. This works with vAlign and is related to hOffset.
value : integer (floating point just gets rounded)
myObjectName.vOffset = 100;
width controls how wide the object appears to be. Related to height.
value : integer (floating point gets rounded)