var name;

function swap(name)
{
    var tempid = name + "_home_on";
    document.getElementById(name + "_home").id = tempid;
    document.getElementById(name + "_nav").className = "nav_selected";
}

function unswap(name)
{
    var tempid = name + "_home";
    document.getElementById(name + "_home_on").id = tempid;
    document.getElementById(name + "_nav").className = "nav_unselected";
}