if (document.images){
	laboOn = new Image
	laboOff = new Image

	OcatalogueOn = new Image
	OcatalogueOff = new Image

	filtrationOn = new Image
	filtrationOff = new Image

	homeOn = new Image
	homeOff = new Image

	catalogOn = new Image
	catalogOff = new Image

	newsOn = new Image
	newsOff = new Image

	searchOn = new Image
	searchOff = new Image

	laboOn.src = '/img/frame-labo_f2.gif'
	laboOff.src = '/img/frame-labo.gif'

	OcatalogueOn.src = '/img/frame-catalogue_f2.gif'
	OcatalogueOff.src = '/img/frame-catalogue.gif'

	filtrationOn.src = '/img/frame-filtration_f2.gif'
	filtrationOff.src = '/img/frame-filtration.gif'

	homeOn.src = '/buttons/button-home_f2.gif'
	homeOff.src = '/buttons/button-home.gif'

	catalogOn.src = '/buttons/button-catalog_f2.gif'
	catalogOff.src = '/buttons/button-catalog.gif'

	newsOn.src = '/buttons/button-news_f2.gif'
	newsOff.src = '/buttons/button-news.gif'

	searchOn.src = '/buttons/button-search_f2.gif'
	searchOff.src = '/buttons/button-search.gif'
}
else{

	laboOn = ""
	laboOff = ""
	document.labo = ""

	OcatalogueOn = ""
	OcatalogueOff = ""
	document.Ocatalogue = ""

	filtrationOn = ""
	filtrationOff = ""
	document.filtration = ""

	homeOn = ""
	homeOff = ""
	document.home = ""

	catalogOn = ""
	catalogOff = ""
	document.catalog = ""

	newsOn = ""
	newsOff = ""
	document.news = ""

	searchOn = ""
	searchOff = ""
	document.search = ""
}