logoon = new Image; logoon.src="assets/nav/logo_0.gif"
logoover = new Image; logoover.src="assets/nav/logo_1.gif"

cardon = new Image; cardon.src="assets/card_0.gif"
cardover = new Image; cardover.src="assets/card_1.gif"

back1on = new Image; back1on.src="assets/nav/back_1.gif"
back1over = new Image; back1over.src="assets/nav/back_2.gif"

next1on = new Image; next1on.src="assets/nav/next_1.gif"
next1over = new Image; next1over.src="assets/nav/next_2.gif"

topon = new Image; topon.src="assets/nav/top_1.gif"
topover = new Image; topover.src="assets/nav/top_2.gif"

back2on = new Image; back2on.src="assets/nav/back_1.gif"
back2over = new Image; back2over.src="assets/nav/back_2.gif"

next2on = new Image; next2on.src="assets/nav/next_1.gif"
next2over = new Image; next2over.src="assets/nav/next_2.gif"