function switchNav(type)
{
    var controls = document.getElementById("divNavigation").getElementsByTagName("div");
    for(var index=0;index<controls.length;index++)
    {
        var control = controls[index];
        if(control.id!="")
            if(control.id.substr(3,5)==type)
                control.style.display = 'block';
            else
                control.style.display = 'none';
    }
    document.getElementById("aClass").className = "";
    document.getElementById("aBrand").className = "";
    document.getElementById("a"+type).className = "nonce";
}