if (document.images) {
    button1 = new Image
    button2 = new Image
    button3 = new Image
    button4 = new Image
    button5 = new Image
    button6 = new Image
    button7 = new Image
    button8 = new Image
    button9 = new Image
    button10 = new Image

    button1.src = 'template/about_on.png'
    button2.src = 'template/about_off.png'
    button3.src = 'template/contact_on.png'
    button4.src = 'template/contact_off.png'
    button5.src = 'template/cooking_classes_on.png'
    button6.src = 'template/cooking_classes_off.png'
    button7.src = 'template/recipes_on.png'
    button8.src = 'template/recipes_off.png'
    button9.src = 'template/gift_registry_on.png'
    button10.src = 'template/gift_registry_off.png'
}