if (document.images) {
home1 = new Image
home2 = new Image

home1.src = 'img/home_off.gif'
home2.src = 'img/home_on.gif'
	 
about1 = new Image
about2 = new Image

about1.src = 'img/about_off.gif'
about2.src = 'img/about_on.gif'
 
products1 = new Image
products2 = new Image

products1.src = 'img/products_off.gif'
products2.src = 'img/products_on.gif'

contact1 = new Image
contact2 = new Image

contact1.src = 'img/contact_off.gif'
contact2.src = 'img/contact_on.gif'

dl1 = new Image
dl2 = new Image

dl1.src = 'img/dl_off.gif'
dl2.src = 'img/dl_on.gif'

kb1 = new Image
kb2 = new Image

kb1.src = 'img/help_off.gif'
kb2.src = 'img/help_on.gif'

}