if (document.images) {

	homeOff = new Image
	homeOn = new Image
	propertiesOff = new Image
	propertiesOn = new Image
	availabilityOff = new Image
	availabilityOn = new Image
	contactOff = new Image
	contactOn = new Image	
	
	homeOff.src = "images/nav/home.gif"
	homeOn.src = "images/nav/home-over.gif"
	propertiesOff.src = "images/nav/properties.gif"
	propertiesOn.src = "images/nav/properties-over.gif"
	availabilityOff.src = "images/nav/availability.gif"
	availabilityOn.src = "images/nav/availability-over.gif"
	contactOff.src = "images/nav/contact.gif"
	contactOn.src = "images/nav/contact-over.gif"
	}

else {
	homeOff = ""
	homeOn = ""
	propertiesOff = ""
	propertiesOn = ""
	availabilityOff = ""
	availabilityOn = ""
	contactOff = ""
	contactOn = ""

	document.home = ""
	document.properties = ""
	document.availability = ""
	document.contact = ""
	}