if (document.images) {
homeoff = new Image
servicesoff = new Image
associatesoff = new Image
presentationsoff = new Image
linksoff = new Image

homeon = new Image
serviceson = new Image
associateson = new Image
presentationson = new Image
linkson = new Image

homeoff.src = "images/nav_home.gif"
servicesoff.src = "images/nav_services.gif"
associatesoff.src = "images/nav_associates.gif"
presentationsoff.src = "images/nav_presentations.gif"
linksoff.src = "images/nav_links.gif"

homeon.src = "images/nav_home_r.gif"
serviceson.src = "images/nav_services_r.gif"
associateson.src = "images/nav_associates_r.gif"
presentationson.src = "images/nav_presentations_r.gif"
linkson.src = "images/nav_links_r.gif"

}
else {

homeoff =  " "
servicesoff =  " "
associatesoff =  " "
presentationsoff =  " "
linksoff =  " "

homeon =  " "
serviceson =  " "
associateson =  " "
presentationson =  " "
linkson =  " "

document.home =  " "
document.services =  " "
document.associates =  " "
document.presentations =  " "
document.links =  " "

}