if (document.images) {
	
//for the front page rollovers

	nav1over = new Image
	nav1over.src = "images/whatisacidrain_over.gif"
	nav1up = new Image
	nav1up.src = "images/whatisacidrain_up.gif"
	
	nav2over = new Image
	nav2over.src="images/whatcausesacidrain_over.gif"
	nav2up = new Image
	nav2up.src = "images/whatcausesacidrain_up.gif"
	
	nav3over = new Image
	nav3over.src = "images/whyisacidrain_over.gif"
	nav3up = new Image
	nav3up.src = "images/whyisacidrain_up.gif"
	
	nav4over = new Image
	nav4over.src = "images/whatisbeingdone_over.gif"
	nav4up = new Image
	nav4up.src = "images/whatisbeingdone_up.gif"
	
	nav5over = new Image
	nav5over.src = "images/whatcanyoudo_over.gif"
	nav5up = new Image
	nav5up.src = "images/whatcanyoudo_up.gif"
	
	nav6over = new Image
	nav6over.src = "images/games_over.gif"
	nav6up = new Image
	nav6up.src = "images/games_up.gif"
	
	nav7over = new Image
	nav7over.src = "images/lucylake_over.gif"
	nav7up = new Image
	nav7up.src = "images/lucylake_up.gif"
	
	nav8over = new Image
	nav8over.src = "images/message_over.gif"
	nav8up = new Image
	nav8up.src = "images/message_up.gif"
	
	nav9over = new Image
	nav9over.src = "images/links_over.gif"
	nav9up = new Image
	nav9up.src = "images/links_up.gif"
	
	nav10over = new Image
	nav10over.src = "images/glossary_over.gif"
	nav10up = new Image
	nav10up.src = "images/glossary_up.gif"	
	
//2nd level rollovers

	nav11over = new Image
	nav11over.src = "images/2ndlevel/whatisacidrain_over.gif"
	nav11up = new Image
	nav11up.src = "images/2ndlevel/whatisacidrain_up.gif"
	
	nav12over = new Image
	nav12over.src="images/2ndlevel/whatcausesacidrain_over.gif"
	nav12up = new Image
	nav12up.src = "images/2ndlevel/whatcausesacidrain_up.gif"
	
	nav13over = new Image
	nav13over.src = "images/2ndlevel/whyisacidrain_over.gif"
	nav13up = new Image
	nav13up.src = "images/2ndlevel/whyisacidrain_up.gif"
	
	nav14over = new Image
	nav14over.src = "images/2ndlevel/whatisbeingdone_over.gif"
	nav14up = new Image
	nav14up.src = "images/2ndlevel/whatisbeingdone_up.gif"
	
	nav15over = new Image
	nav15over.src = "images/2ndlevel/whatcanyoudo_over.gif"
	nav15up = new Image
	nav15up.src = "images/2ndlevel/whatcanyoudo_up.gif"
	
	nav16over = new Image
	nav16over.src = "images/2ndlevel/games_over.gif"
	nav16up = new Image
	nav16up.src = "images/2ndlevel/games_up.gif"
	
	nav17over = new Image
	nav17over.src = "images/2ndlevel/lucylake_over.gif"
	nav17up = new Image
	nav17up.src = "images/2ndlevel/lucylake_up.gif"
	
	nav18over = new Image
	nav18over.src = "images/2ndlevel/message_over.gif"
	nav18up = new Image
	nav18up.src = "images/2ndlevel/message_up.gif"
	
	nav19over = new Image
	nav19over.src = "images/2ndlevel/links_over.gif"
	nav19up = new Image
	nav19up.src = "images/2ndlevel/links_up.gif"
	
	nav20over = new Image
	nav20over.src = "images/2ndlevel/glossary_over.gif"
	nav20up = new Image
	nav20up.src = "images/2ndlevel/glossary_up.gif"
	
//3rd level navigation

	nav21over = new Image
	nav21over.src = "images/3rdlevel/whatisacidrain_over.gif"
	nav21up = new Image
	nav21up.src = "images/3rdlevel/whatisacidrain_up.gif"
	
	nav22over = new Image
	nav22over.src="images/3rdlevel/whatcausesacidrain_over.gif"
	nav22up = new Image
	nav22up.src = "images/3rdlevel/whatcausesacidrain_up.gif"
	
	nav23over = new Image
	nav23over.src = "images/3rdlevel/whyisacidrain_over.gif"
	nav23up = new Image
	nav23up.src = "images/3rdlevel/whyisacidrain_up.gif"
	
	nav24over = new Image
	nav24over.src = "images/3rdlevel/whatisbeingdone_over.gif"
	nav24up = new Image
	nav24up.src = "images/3rdlevel/whatisbeingdone_up.gif"
	
	nav25over = new Image
	nav25over.src = "images/3rdlevel/whatcanyoudo_over.gif"
	nav25up = new Image
	nav25up.src = "images/3rdlevel/whatcanyoudo_up.gif"
	
	nav26over = new Image
	nav26over.src = "images/3rdlevel/games_over.gif"
	nav26up = new Image
	nav26up.src = "images/3rdlevel/games_up.gif"
	
	nav27over = new Image
	nav27over.src = "images/3rdlevel/lucylake_over.gif"
	nav27up = new Image
	nav27up.src = "images/3rdlevel/lucylake_up.gif"
	
	nav28over = new Image
	nav28over.src = "images/3rdlevel/message_over.gif"
	nav28up = new Image
	nav28up.src = "images/3rdlevel/message_up.gif"
	
	nav29over = new Image
	nav29over.src = "images/3rdlevel/links_over.gif"
	nav29up = new Image
	nav29up.src = "images/3rdlevel/links_up.gif"
	
	nav30over = new Image
	nav30over.src = "images/3rdlevel/glossary_over.gif"
	nav30up = new Image
	nav30up.src = "images/3rdlevel/glossary_up.gif"
		
}
else {
	document.whatis= " "
	nav1over = " "
	nav1up = " "
	
	document.causes = " "
	nav2over = " "
	nav2up = " "

	document.harmful = " "
	nav3over = " "
	nav3up = " "
	
	document.beingdone = " "
	nav4over = " "
	nav4up = " "
	
	document.youcando = " "
	nav5over = " "
	nav5up = " "
	
	document.games = " "
	nav6over = " "
	nav6up = " "
	
	document.lucylake = " "
	nav7over = " "
	nav7up = " "
	
	document.message = " "
	nav8over = " "
	nav8up = " "
	
	document.links = " "
	nav9over = " "
	nav9up = " "
	
	document.glossary = " "
	nav10over = " "
	nav10up = " "	
	
document.whatis= " "
	nav11over = " "
	nav11up = " "
	
	document.causes = " "
	nav12over = " "
	nav12up = " "

	document.harmful = " "
	nav13over = " "
	nav13up = " "
	
	document.beingdone = " "
	nav14over = " "
	nav14up = " "
	
	document.youcando = " "
	nav15over = " "
	nav15up = " "
	
	document.games = " "
	nav16over = " "
	nav16up = " "
	
	document.lucylake = " "
	nav17over = " "
	nav17up = " "
	
	document.message = " "
	nav18over = " "
	nav18up = " "
	
	document.links = " "
	nav19over = " "
	nav19up = " "
	
	document.glossary = " "
	nav20over = " "
	nav20up = " "		
}