[fish_r]

http://help.adobe.com/en_US/as3/dev/...0204-7cb1.html

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Собственно суть:

First of all, the code checks whether the external API is even available in the current container using the ExternalInterface.available property. If so, it begins the process of setting up communication. Because security exceptions and other errors can occur when you attempt communication with an external application, the code is wrapped in a try block (the corresponding catch blocks were omitted from the listing for brevity).