function divDisplay(divStr, OnOff) {
    var div = document.getElementById(divStr);
    if (div) {
        if (OnOff == 1) {
            div.style.display = 'block';
        }
        else if (OnOff == 0) {
            div.style.display = 'none';
        }
        else {
            if (div.style.display != 'block')
                div.style.display = 'block';
            else
                div.style.display = 'none';
        }
        return true;
    }
}

function navDisplay(pageName) {
    // var div = document.getElementById("sub_" + pageName);
    divDisplay("sub_solutions", 0);
    divDisplay("sub_features", 0);
    divDisplay("sub_partners", 0);
    divDisplay("sub_contactus", 0);

    divDisplay("sub_" + pageName, 1);
}