// main navigation rollover
function mainNavOn(id) {
    var bot_cell = document.getElementById("mn_" + id + "_b");
    var bgcolors = new Array("#ff4040", "#ffac40", "#fff440", "#65e841", "#40f8f5", "#4040f4", "#b040ff");

    bot_cell.style.backgroundColor = bgcolors[id - 1];
}

// main navigation rollout
function mainNavOff(id) {
    var bot_cell = document.getElementById("mn_" + id + "_b");

    bot_cell.style.backgroundColor = "";
}