German text narrator (translate.google.com)

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C#

I use

webBrowserGoogleTranslate.Navigate(@"http://translate.google.com/?hl=en&tab=wT#de|en|" + "xxx");

and I found that the button for listening has id : gt-src-listen
so I make a virtual click to hear the word.

webBrowserGoogleTranslate.Document.GetElementById("gt-src-listen").InvokeMember("click");

This worked for a while, but something has gone wrong.
Now the listen button doesn't work even if I press it manually with the real mouse.

So I want a javacode to run and make the function of the listen button, something like
javascript.run('readText()');