Used to get the currently loaded and total bytes of the specified MovieClip.
First available in version 3.0 build 2039.
Not available in ActionScript 3.
target - String - The movieclip or level that was specified as a target of the loadClip or loadClipSecure method.
Method; returns an object with the properties bytesLoaded and bytesTotal for the given target movieclip or level. You can use this method instead of, or along with, writing an onLoadProgress event handler.