function _set_start_page( ) {
	var ua = navigator.userAgent;
	var ie = ua.indexOf( "MSIE" );
	var os = ua.indexOf( "Windows" );
	var iv = parseInt( ua.substring( ie+5, ie+6 ) );
	if( ie > 0 && iv >= 5 && os > 0 && !window.opera ) {
		document.body.style.behavior = 'url(#default#homepage)';
		document.body.setHomePage( "http://images.hanamoku.jp/" );
	}
	else {
		document.location.href = "http://www.hanamoku.jp/help/start.html";
	}
	return false;
}

function _set_favorite_page( ) {
	var ua = navigator.userAgent;
	var ie = ua.indexOf( "MSIE" );
	var os = ua.indexOf( "Windows" );
	var iv = parseInt( ua.substring( ie+5, ie+6 ) );
	if( ie > 0 && iv >= 5 && os > 0 && !window.opera ) {
		window.external.addFavorite( "http://images.hanamoku.jp/", "HANAMOKU - イメージ検索" );
	}
	else {
		document.location.href = "http://www.hanamoku.jp/help/favorite.html";
	}
	return false;
}