if (document.images) {
home_over= new Image
home_over.src = 'images/home_over.gif'
home_out= new Image
home_out.src= 'images/home_out.gif'
courses_over= new Image
courses_over.src = 'images/courses_over.gif'
courses_out= new Image
courses_out.src= 'images/courses_out.gif'
asaratings_over= new Image
asaratings_over.src = 'images/asaratings_over.gif'
asaratings_out= new Image
asaratings_out.src= 'images/asaratings_out.gif'
fleet_over= new Image
fleet_over.src = 'images/fleet_over.gif'
fleet_out= new Image
fleet_out.src= 'images/fleet_out.gif'
staff_over= new Image
staff_over.src = 'images/staff_over.gif'
staff_out= new Image
staff_out.src= 'images/staff_out.gif'
drivingdir_over= new Image
drivingdir_over.src = 'images/drivingdir_over.gif'
drivingdir_out= new Image
drivingdir_out.src= 'images/drivingdir_out.gif'
winds_over= new Image
winds_over.src = 'images/winds_over.gif'
winds_out= new Image
winds_out.src= 'images/winds_out.gif'
contactus_over= new Image
contactus_over.src = 'images/contactus_over.gif'
contactus_out= new Image
contactus_out.src= 'images/contactus_out.gif'
messengersails_over= new Image
messengersails_over.src = 'images/messengersails_over.gif'
messengersails_out= new Image
messengersails_out.src= 'images/messengersails_out.gif'
}

else {
home_over= " "
home_out= " "
document.home = " "
courses_over= " "
courses_out= " "
document.courses = " "
asaratings_over= " "
asaratings_out= " "
document.asaratings = " "
fleet_over= " "
fleet_out= " "
document.fleet = " "
staff_over= " "
staff_out= " "
document.staff = " "
drivingdir_over= " "
drivingdir_out= " "
document.drivingdir = " "
winds_over= " "
winds_out= " "
document.winds = " "
contactus_over= " "
contactus_out= " "
document.contactus = " "
messengersails_over= " "
messengersails_out= " "
document.messengersails = " "
}