Flash MX 2004.
fl.configURI
Read-only property; a string that specifies the full path for the local user’s Configuration directory as a file:/// URI. See also fl.configDirectory.
The following example runs a specified script. Using fl.configURI lets you specify the location of the script without knowing which platform the script is running on.
// To run a command in your commands menu, change "Test.Jsfl"
// to the command you want to run in the line below.
fl.runScript( fl.configURI + "Commands/Test.jsfl" );