window.onload= function() {
	// サブメニュー
	swapImage( 'sEnergy', '../../common/img/sEnergy_over.gif', '../../common/img/sEnergy_out.gif' );
	swapImage( 'sBooks', '../../common/img/sBooks_over.gif', '../../common/img/sBooks_out.gif' );
	swapImage( 'sColumn', '../../common/img/sColumn_over.gif', '../../common/img/sColumn_out.gif' );
	swapImage( 'sLive', '../../common/img/sLive_over.gif', '../../common/img/sLive_out.gif' );
	preload( );
}