function hideDisplayDiv(divID, hidFieldId) {
    var divDisplay = document.getElementById(divID);
    var hidField = document.getElementById(hidFieldId);

    if (hidField != null) {
        divHide = document.getElementById(hidField.value); 
    }

    if (divDisplay != null && divHide != null) {
        divHide.style.display = 'none';
        divDisplay.style.display = 'block';

        hidField.value = divID;
    }
}