var w = new Worker('speedtest_worker.min.js') // create new worker
setInterval(function () { w.postMessage('status') }, 100) // ask for status every 100ms
w.onmessage = function (event) { // when status is received, split the string and put the values in the appropriate fields
var data = event.data.split(';') // string format: status;download;upload;ping (speeds are in mbit/s) (status: 0=not started, 1=downloading, 2=uploading, 3=ping, 4=done, 5=aborted)