var Score = false;

function showstar(x)
{
    if (x == 0) return;
    if (Score == true)
        return; 

    for (var i = 1; i < x; i++)
        document.getElementById("star" + i).src = "images/showstar.gif";

    document.getElementById("star" + x).src = "images/showstar.gif";
}

function clearstar()
{
    if (Score == true)
        return; 

    for (var i = 1; i < 6; i++)
        document.getElementById("star" + i).src = "images/clearstar.gif";
}