function addstring(index,dir) {
	if(index == 0){
		document.forms[0].q.value = document.forms[0].q.value + ' site:www.nikkaibo.or.jp/';
	}
	if(index == 1){
		document.forms[1].q.value = document.forms[1].q.value + String(' site:www.nikkaibo.or.jp/').concat(dir);
	}
	return true;
}