if (document.images) {

var footer_nav_directionsA = new Image()
footer_nav_directionsA.src = "images/footer_nav_directions_off.gif"
var footer_nav_directionsZ = new Image()
footer_nav_directionsZ.src = "images/footer_nav_directions_on.gif"

var footer_nav_howA = new Image()
footer_nav_howA.src = "images/footer_nav_how_off.gif"
var footer_nav_howZ = new Image()
footer_nav_howZ.src = "images/footer_nav_how_on.gif"

var footer_nav_contactA = new Image()
footer_nav_contactA.src = "images/footer_nav_contact_off.gif"
var footer_nav_contactZ = new Image()
footer_nav_contactZ.src = "images/footer_nav_contact_on.gif"



}
function act(imgName) {
if (document.images)
document[imgName].src = eval(imgName + 'Z.src')
}

function inact(imgName) {
if (document.images)
document[imgName].src = eval(imgName + 'A.src')
}