if (document.images) {

logoutoff = new Image
loginoff = new Image
homeoff = new Image
aboutoff = new Image
investmentoff = new Image
managementoff = new Image
investoroff = new Image
adminoff = new Image
contactoff = new Image

logouton = new Image
loginon = new Image
homeon = new Image
abouton = new Image
investmenton = new Image
managementon = new Image
investoron = new Image
adminon = new Image
contacton = new Image

logoutoff.src = "images/logout.gif"
loginoff.src = "images/login.gif"
homeoff.src = "images/home.gif"
aboutoff.src = "images/nav_about.gif"
investmentoff.src = "images/nav_investment.gif"
managementoff.src = "images/nav_management.gif"
investoroff.src = "images/nav_investor.gif"
adminoff.src = "images/nav_admin.gif"
contactoff.src = "images/nav_contact.gif"

logouton.src = "images/logout_r.gif"
loginon.src = "images/login_r.gif"
homeon.src = "images/home_r.gif"
abouton.src = "images/nav_about_r.gif"
investmenton.src = "images/nav_investment_r.gif"
managementon.src = "images/nav_management_r.gif"
investoron.src = "images/nav_investor_r.gif"
adminon.src = "images/nav_admin_r.gif"
contacton.src = "images/nav_contact_r.gif"

}
else {

logoutoff = " "
loginoff = " "
homeoff = " "
aboutoff =  " "
investmentoff =  " "
managementoff =  " "
investoroff =  " "
adminoff =  " "
contactoff =  " "

logouton = " "
loginon = " "
homeon = " "
abouton =  " "
investmenton =  " "
managementon =  " "
investoron =  " "
adminon =  " "
contacton =  " "

document.logout =  " "
document.login =  " "
document.home =  " "
document.about =  " "
document.investment =  " "
document.management =  " "
document.investor =  " "
document.admin =  " "
document.contact =  " "

}