new Event() for old browsers

event.js

function Event(name, params) {
	if(typeof name !== 'string') throw new Error('TypeError');
	var _evt;
	_evt = document.createEvent('Event');
	_evt.initEvent(name, true, true);

	if(typeof params === 'object')
	for(var p in params) {
		if(!_evt.hasOwnProperty(p)) {
			_evt[p] = params[p];
		} else {
			throw new Error('AccessViolation');
		}
	}
	return _evt;
}