var pics
pics = new Array()
var objCount = 0

function preload(name, first, second) {
    pics[objCount] = new Array(3)
    pics[objCount][0] = new Image()
    pics[objCount][0].src = first
    pics[objCount][1] = new Image()
    pics[objCount][1].src = second
    pics[objCount][2] = name
    objCount++
}

function on(name) {
    for (i = 0; i < objCount; i++) {
    if (document.images[pics[i][2]] != null)
        if (name != pics[i][2]) {
            document.images[pics[i][2]].src = pics[i][0].src
        } else {
             document.images[pics[i][2]].src = pics[i][1].src
        }
    }
}

function off() {
    for (i = 0; i < objCount; i++) {
    if (document.images[pics[i][2]] != null)
        document.images[pics[i][2]].src = pics[i][0].src
    }
}

preload("home", "images/home-off.gif", "images/home-on.gif")
preload("company", "images/company-off.gif", "images/company-on.gif")
preload("products", "images/products-off.gif", "images/products-on.gif")
preload("equipment", "images/equipment-off.gif", "images/equipment-on.gif")
preload("quality", "images/quality-off.gif", "images/quality-on.gif")
preload("partners", "images/partners-off.gif", "images/partners-on.gif")
preload("order", "images/order-off.gif", "images/order-on.gif")
preload("contacts", "images/contacts-off.gif", "images/contacts-on.gif")