User Guide

1300 ActionScript classes
For more information, see the following:
■ Chapter 17, "Understanding Security," in Learning ActionScript 2.0 in Flash
■ The Flash Player 8 Security white paper at http://www.macromedia.com/go/fp8_security
■ The Flash Player 8 Security-Related API white paper at http://www.macromedia.com/go/
fp8_security_apis
For Flash Player 7 and later websites can permit cross-domain access to a resource via a cross-
domain policy file. In SWF files of any version running in Flash Player 7 and later, the
url
parameter must be in exactly the same domain. For example, a SWF file at
www.someDomain.com can load data only from sources that are also at
www.someDomain.com.
In SWF files running in a version of the player earlier than Flash Player 7, the
url parameter
must be in the same superdomain as the SWF file that issues this call. A superdomain is
derived by removing the leftmost component of a file's URL. For example, a SWF file at
www.someDomain.com can load data from sources at store.someDomain.com, because both
files are in the same superdomain of someDomain.com.
Availability: ActionScript 1.0; Flash Player 5 - The behavior changed in Flash Player 7.
Parameters
url:String - A string that represents the URL where the XML document to be loaded is
located. If the SWF file that issues this call is running in a web browser,
url must be in the
same domain as the SWF file.
Returns
Boolean - A Boolean value of false if no parameter (null) is passed; true otherwise. Use the
onLoad() event handler to check the success of a loaded XML document.