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

	button1on.src = "./images/new2.gif"
	button1off.src = "./images/new1.gif"
	button2on.src = "./images/contact2.gif"
	button2off.src = "./images/contact1.gif"
	button3on.src = "./images/sitemap2.gif"
	button3off.src = "./images/sitemap1.gif"
	button4on.src = "./images/home2.gif"
	button4off.src = "./images/home1.gif"
}