function closeDiv(elementID) {
    var elemObj = document.getElementById(elementID);
    if (elemObj != null) {
        elemObj.style.display = 'none';
        //targetObj.style.visibility = 'hidden';
    }
    else {
        alert('Object ' + elementID + ' not found.');
    }
}

function openDiv(elementID) {
    
    var elemObj = document.getElementById(elementID);
    if (elemObj != null) {
        elemObj.style.display = 'block';
        //targetObj.style.visibility = 'visible';
    }
    else {
        alert('Object ' + elementID + ' not found.');
    }
}