// pre-loading pictures
MM_preloadImages(
	'images/interface/nav/01_psychanalyse-over.png',
	'images/interface/nav/02_philosophie-over.png',
	'images/interface/nav/03_science_metaphysique-over.png',
	'images/interface/nav/04_philophie_anthropologie-over.png',
	'images/interface/nav/05_hors_serie-over.png'
);