if (document.images) {

	img1on = new Image
    img2on = new Image
    img3on = new Image	
	img4on = new Image
	img5on = new Image
	img6on = new Image
	img1 = new Image
	img2 = new Image
	img3 = new Image
	img4 = new Image
	img5 = new Image
	img6 = new Image

    img1on.src = "images/home_r.gif"
    img2on.src = "images/alpha_r.gif"
    img3on.src = "images/categories_r.gif"
	img4on.src = "images/watchman-nee_r.gif"
    img5on.src = "images/witness-lee_r.gif"
	img6on.src = "images/life-studies_r.gif"
    img1.src = "images/home_n.gif"
    img2.src = "images/alpha_n.gif"
    img3.src = "images/categories_n.gif"
	img4.src = "images/watchman-nee_n.gif"
    img5.src = "images/witness-lee_n.gif"
	img6.src = "images/life-studies_n.gif"
}

else {

    img1on = " "
    img2on = " "
    img3on = " "
	img4on = " "
	img5on = " "
	img6on = " "
    img1 = " "
    img2 = " "
    img3 = " "
	img4 = " "
	img5 = " "
	img6 = " "
    document.buttons = " "

}