on10 = new Image();
on20 = new Image();
on30 = new Image();
on40 = new Image();
on50 = new Image();

on10.src = "images/publicsite/nav_top/1_company_on.gif";
on20.src = "images/publicsite/nav_top/2_products_on.gif";
on30.src = "images/publicsite/nav_top/3_trading_on.gif";
on40.src = "images/publicsite/nav_top/4_technology_on.gif";
on50.src = "images/publicsite/nav_top/5_benefits_on.gif";

off10 = new Image();
off20 = new Image();
off30 = new Image();
off40 = new Image();
off50 = new Image();

off10.src = "images/publicsite/nav_top/1_company.gif";
off20.src = "images/publicsite/nav_top/2_products.gif";
off30.src = "images/publicsite/nav_top/3_trading.gif";
off40.src = "images/publicsite/nav_top/4_technology.gif";
off50.src = "images/publicsite/nav_top/5_benefits.gif";

    function f_swapOver(n) {
        if (document.images) {
            document.images['image'+n].src = eval("on" + n + ".src");
        }
    }

    function f_swapOut(n) {
        if (document.images) {
            document.images['image'+n].src = eval("off" + n + ".src");
        }
    }