[JavaScript] イベント登録、発行ユーティリティ

EventUtils.js

function addEvent(target, type, listener) {
	if (target.addEventListener) { // W3C
		target.addEventListener(type, listener, false);
	} else if (target.attachEvent) { // IE
		target.attachEvent("on" + type, listener);
	} else {
		target["on" + type] = listener;
	}
}

function dispatchMouseEvent(target, type) {
	var event;
	if (target.dispatchEvent) { // W3C
		event = document.createEvent("MouseEvents");
		event.initEvent(type, false, true);
		target.dispatchEvent(event);
	} else if (target.fireEvent) { // IE
		target.fireEvent("on" + type);
	}
}