if (document.images) {
	button1on = new Image
	button1off = new Image

	button2on = new Image
	button2off = new Image

	button3on = new Image
	button3off = new Image

	button4on = new Image
	button4off = new Image

	button5on = new Image
	button5off = new Image
	
	button6on = new Image
	button6off = new Image
	
	button7on = new Image
	button7off = new Image

	button8on = new Image
	button8off = new Image
	
	button9on = new Image
	button9off = new Image
	
	button10on = new Image
	button10off = new Image

	button1on.src = "./images/nav-over_01.gif"
	button1off.src = "./images/nav_01.gif"
	button2on.src = "./images/nav-over_02.gif"
	button2off.src = "./images/nav_02.gif"
	button3on.src = "./images/nav-over_03.gif"
	button3off.src = "./images/nav_03.gif"
	button4on.src = "./images/nav-over_04.gif"
	button4off.src = "./images/nav_04.gif"
	button5on.src = "./images/nav-over_05.gif"
	button5off.src = "./images/nav_05.gif"
	button6on.src = "./images/nav-over_06.gif"
	button6off.src = "./images/nav_06.gif"
	button7on.src = "./images/nav-over_07.gif"
	button7off.src = "./images/nav_07.gif"
	button8on.src = "./images/nav-over_08.gif"
	button8off.src = "./images/nav_08.gif"
	button9on.src = "./images/nav-over_09.gif"
	button9off.src = "./images/nav_09.gif"
	button10on.src = "./images/nav-over_10.gif"
	button10off.src = "./images/nav_10.gif"
}