function ShowHighlight( button, name, id )
{
    var count = document.images.length;
    var i;
    for(i=0; i< count; i++ )
    {
        if( document.images[i].id == name )
        {
            document.images[i].src = highlightImages[id].src;
            break;
        }
    }
    return true;
}
function ShowNormal( button, name, id )
{
    var count = document.images.length;
    var i;
    for(i=0; i< count; i++ )
    {
        if( document.images[i].id == name )
        {
            document.images[i].src = normalImages[id].src;
            break;
         }
    }
    return true;
}