MACROMEDIA FIREWORKS 8-EXTENDING FIREWORKS Manual page 94

You can use the information in the following sections to return or set property values.
The return value for a property may be null.
Working with properties for any selected object
You can get values for the following read-only properties of any type of selected object:
top
left
width
height
visible
opacity
blendMode
name
mask
To return the name of the selected object, type the following code:
objectName=fw.selection[0].name;
The following properties contain other read-only properties that you can return:
elementMask
element
linked
enabled
mode
showAttrs
autoExpandImages
effectList
name
effects
To return the name of the first effect that is applied to the selected object, type the following
code:
effectName=fw.selection[0].effectList.effects[0].name;
94 The Fireworks Object Model