window.onload= function() {
	// グローバルメニュー
	swapImage( 'gCompany', './common/img/gCompany_over.gif', './common/img/gCompany_out.gif' );
	swapImage( 'gProfile', './common/img/gProfile_over.gif', './common/img/gProfile_out.gif' );
	swapImage( 'gMessage', './common/img/gMessage_over.gif', './common/img/gMessage_out.gif' );
	swapImage( 'gInfo', './common/img/gInfo_over.gif', './common/img/gInfo_out.gif' );
	swapImage( 'gContact', './common/img/gContact_over.gif', './common/img/gContact_out.gif' );
	// サブメニュー
	swapImage( 'sEnergy', './common/img/sEnergy_over.gif', './common/img/sEnergy_out.gif' );
	swapImage( 'sLibrary', './common/img/sLibrary_over.gif', './common/img/sLibrary_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' );
	// コンテンツ
	swapImage( 'lShip', './image/lShip_over.gif', './image/lShip_out.gif' );
	preload( );
}