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<html><body><h1>HTML DOM Events</h1><h2>The onoffline Event</h2><p>Use the HTML DOM to assign an "ononline" and "onoffline" event to a body element.</p><p><b>NOTE:</b> There will only be an "output" from this example when the browser shifts from online to offline.</p><script>document.getElementsByTagName("BODY")[0].ononline = function() {onFunction()};document.getElementsByTagName("BODY")[0].onoffline = function() {offFunction()};function onFunction() { document.getElementById("demo").innerHTML = "Your browser is working online.";}function offFunction() { document.getElementById("demo").innerHTML = "Your browser is working offline.";}</script></body></html>