Flex accesibility requirement

How to add accessibility requirements to a swf created using mxml+flex sdk? I have a few buttons and textfield开发者_运维百科s in the swf and the impaired user should be able to increase the button size and text size while using the swf. I've looked into flex built-in accessibility features, but its not what I require. I want to run the swf standalone without a browser, so preferably change the size with a visual widget.

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This guy posted a good solution so that the user can use Ctrl +/- to increase all font sizes in a Flex app.

http://cookbooks.adobe.com/post_Change_font_size_in_the_whole_app_with_Ctrl___-16307.html