Event Bubbling
function mouseDown(nsEvent) {
var theEvent = nsEvent ? nsEvent : window.event;
var locString = "X = " + theEvent.screenX + " Y = " + theEvent.screenY;
var theSrc = theEvent.target ? theEvent.target : theEvent.srcElement;
document.write(locString + " " + theSrc);
}
document.onmousedown=function (evnt) {
var theEvnt = evnt? evnt : window.event;
document.write(theEvnt.type);
}
window.onload=function () {
document.getElementById("first").onmousedown=mouseDown;
document.getElementById("second").onmousedown=function () {
document.write("Second event handler");
}
}