/* -------------------------------------------------------------------------------------------------
      JavaScript Functions
                                                                                                    */

function changeImage(id, url)
{
    document.getElementById(id).src = url;
}


function disableCheckboxes(field)
{
    formId = field.form;
    for (var i = 0; i < formId.elements.length; i++) {
        if (formId.elements[i].name == field.name && formId.elements[i] != field) {
            formId.elements[i].disabled = (field.checked == true) ? true : false;
        }
    }
}