if (document.images){
black = new Image
contact = new Image
home = new Image
invent = new Image
locate = new Image
staff = new Image


contact.src = "images/nav/contact_orange.gif"
black.src = "images/nav/navigationblack.gif"
home.src = "images/nav/home_orange.gif"
invent.src = "images/nav/inventory_orange.gif"
locate.src = "images/nav/location_orange.gif"
staff.src = "images/nav/staff_orange.gif"
}
else {
contact = ""
black = ""
home = ""
invent = ""
locate = ""
staff = ""

document.roll = ""
}