text to speech - How to create a voice using JavaScript? -

is there simple way can create text-to-speech function javascript? preferably, in form:

<script type="text/javascript"> function createvoice(text) { javascript code } </script> <a onclick="createvoice('hello world')">text-to-speech test</a> 

is possible that?

you need external library. example @ http://www.speechapi.com/apis/javascript/