How do I make "ActiveXObject('SAPI.SpVoice')" work in firefox

How do I make ActiveXObject('SAPI.SpVoice') work in firefox? firefox does not recognize the ActiveX开发者_运维技巧Object function. Are there any alternatives for this?

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Firefox does not support ActiveX technology, you can try using plugins or extensions

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Because Firefox does not use ActiveX, you have to use a JavaScript substitute such as

http://www.masswerk.at/mespeak/

and

http://www.jtalkplugin.com/