if (document.images) {
homeover = new Image
homeover.src = 'imgs/nav_home_on.gif'
homeout= new Image
homeout.src = 'imgs/nav_home_off.gif'

trainingover = new Image
trainingover.src = 'imgs/nav_training_on.gif'
trainingout= new Image
trainingout.src = 'imgs/nav_training_off.gif'

fleetover = new Image
fleetover.src = 'imgs/nav_fleet_on.gif'
fleetout= new Image
fleetout.src = 'imgs/nav_fleet_off.gif'

maintenanceover = new Image
maintenanceover.src = 'imgs/nav_maintenance_on.gif'
maintenanceout= new Image
maintenanceout.src = 'imgs/nav_maintenance_off.gif'

charterover = new Image
charterover.src = 'imgs/nav_charter_on.gif'
charterout= new Image
charterout.src = 'imgs/nav_charter_off.gif'

industryagover = new Image
industryagover.src = 'imgs/nav_industryag_on.gif'
industryagout= new Image
industryagout.src = 'imgs/nav_industryag_off.gif'

scenicover = new Image
scenicover.src = 'imgs/nav_scenic_on.gif'
scenicout= new Image
scenicout.src = 'imgs/nav_scenic_off.gif'

photosover = new Image
photosover.src = 'imgs/nav_photos_on.gif'
photosout= new Image
photosout.src = 'imgs/nav_photos_off.gif'

weblinksover = new Image
weblinksover.src = 'imgs/nav_weblinks_on.gif'
weblinksout= new Image
weblinksout.src = 'imgs/nav_weblinks_off.gif'

drivingdirectionsover = new Image
drivingdirectionsover.src = 'imgs/nav_drivingdirections_on.gif'
drivingdirectionsout= new Image
drivingdirectionsout.src = 'imgs/nav_drivingdirections_off.gif'

contactusover = new Image
contactusover.src = 'imgs/nav_contactus_on.gif'
contactusout= new Image
contactusout.src = 'imgs/nav_contactus_off.gif'

dispatchover = new Image
dispatchover.src = 'imgs/nav_dispatch_on.gif'
dispatchout= new Image
dispatchout.src = 'imgs/nav_dispatch_off.gif'

}

else {
homeover = " "
homeout = " "
document.home = " "

trainingover = " "
trainingout = " "
document.training = " "

fleetover = " "
fleetout = " "
document.fleet = " "

maintenanceover = " "
maintenanceout = " "
document.maintenance = " "

charterover = " "
charterout = " "
document.charter = " "

industryagover = " "
industryagout = " "
document.industryag = " "

scenicover = " "
scenicout = " "
document.scenic = " "

photosover = " "
photosout = " "
document.photos = " "

weblinksover = " "
weblinksout = " "
document.weblinks = " "

drivingdirectionsover = " "
drivingdirectionsout = " "
document.drivingdirections = " "

dispatchover = " "
dispatchout = " "
document.dispatch = " "

dispatchover = " "
dispatchout = " "
document.dispatch = " "

}