// if (document.layers) document.captureEvents(Event.KEYPRESS); // needed if you wish to cancel the key

document.onkeydown = keyhandler;
function keyhandler(e) {
    if (document.layers)
        Key = e.which;
    else
        Key = window.event.keyCode;
    if (Key == 27) {
	window.status = document.activeElement.name + " Valeur:"
	                            + document.activeElement.value; 
	}  else { window.status = "";}
}