// mouse over images

var overviewOn = new Image()
overviewOn.src = imageDir + "but_overview_on.gif"

var detailsOn = new Image()
detailsOn.src = imageDir + "but_details_on.gif"

var contractOn = new Image()
contractOn.src = imageDir + "but_contract_on.gif"

var datesOn = new Image()
datesOn.src = imageDir + "but_dates_on.gif"

var contactOn = new Image()
contactOn.src = imageDir + "but_contact_on.gif"

var homeOn = new Image()
homeOn.src = imageDir + "but_home_on.gif"

// mouse out images
var overviewOff = new Image()
overviewOff.src = imageDir + "but_overview.gif"

var detailsOff = new Image()
detailsOff.src = imageDir + "but_details.gif"

var contractOff = new Image()
contractOff.src = imageDir + "but_contract.gif"

var datesOff = new Image()
datesOff.src = imageDir + "but_dates.gif"

var contactOff = new Image()
contactOff.src = imageDir + "but_contact.gif"

var homeOff = new Image()
homeOff.src = imageDir + "but_home.gif"