function showDiv(divName)
{
    var ProductGroups = document.getElementById(divName);
    
    if (ProductGroups)
    {
        ProductGroups.style.visibility = "visible";
        ProductGroups.style.display= "block";        
    }
}

function hideDiv(divName)
{
    var ProductGroups = document.getElementById(divName);
    
    if (ProductGroups)
    {
        ProductGroups.style.visibility = "hidden";
        ProductGroups.style.display= "none";
    }
}