function checkEventObj (_event_){
	// --- IE explorer
	if ( window.event )
		return window.event;
	// --- Netscape and other explorers
	else
		return _event_;
}


function keyEnter (_event_) {
	var winObj = checkEventObj(_event_);
	if (winObj.keyCode == 13) {
		return true;
	}
	return false;
}