/*at this point all this "event listener" can do is "add events"
future version will delete events/stop propagation ... */
function eventHandler(addDestination, listener, runFunction) {
	if (window.addEventListener){  //FireFox
  	addDestination.addEventListener(listener, runFunction, false);
	} else if (window.attachEvent){ //IE
		listener="on"+listener;
  	addDestination.attachEvent(listener, runFunction);
	}
}