//-----------------------------------------------------------------------------------------------------------
function showList(n)
{     var k;
 for ( k = 0; k <= 3; k++){
    document.getElementById('f'+k).style.display = "none";
 }
    document.getElementById('f'+ n).style.display = "block";
}
//-----------------------------------------------------------------------------------------------------------------
function showSub(m)
{     var l;
 for ( l = 0; l <= 2; l++){
    document.getElementById('g'+l).style.display = "none";
 }
    document.getElementById('g'+ m).style.display = "block";
}

//-----------------------------------------------------------------------------------------------------------------

function showData(o)
{     var m;
 for ( m = 0; m <= 1; m++){
    document.getElementById('d'+ m).style.display = "none";
 }
    document.getElementById('d'+ o).style.display = "block";
}