michael@0: /**
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: var counter = 0;
michael@0: 
michael@0: var interval = setInterval(function() {
michael@0:   postMessage(++counter);
michael@0: }, 100);
michael@0: 
michael@0: onmessage = function(event) {
michael@0:   clearInterval(interval);
michael@0: }