function NewWind(FILENAME) {
	myWind = window.open(FILENAME,"WIND","toolbar=no,scrollbars=yes,menubar=no,status=yes,HEIGHT=530,WIDTH=500");
	myWind.focus();
}
function go_back() {
	// URLの?以降をチェック
	str = location.search;
	from = str.substring( 1, str.length );
	if ( from.length > 0 ) {
		location.href = from;
	} else {
		history.back();
	}
}