function selectDatacenter()
{
    var index = document.datacenterSelection.datacenter.selectedIndex;
    var datacenter = document.datacenterSelection.datacenter.options[index].value;
    var url;
    if ( datacenter != '' )
    {
        if ( datacenter == 'rbx' )
        {
            url =  './index_rbx.html';
        }
        else if ( datacenter == 'rbx2' )
        {
            url =  './index_rbx2.html';
        }
        else
        {
             url =  './index_p19.html';
        }
    }
    else
    {
        url = './index.html';
    }

    document.location.href=url;
}