Custom Events in JavaScript

[Costas]

http://www.kirupa.com/html5/custom_events_js.htm

document.body.addEventListener("myEventName", doSomething, false);
 
function doSomething(e) {
    alert("Event is called: " + e.type);
}
 
var myEvent = new CustomEvent("myEventName");
dodocument.body.dispatchEvent(myEvent);