/*****************************************************
 * JavaScript functions for:                         *
 *                                                   *
 *      --==+Asynchronous E-learning System+==--     *   
 *                                                   *
 *                                From version: 1.34 *
 *                          (c) 2005-2006 Jan Zboril *
 *****************************************************/


function setCheckbox( ID ) 
/* set checkbox by ID to true/false */
{
    var checkbox = document.getElementById(ID);

        if ( checkbox.type == 'checkbox' ) 
        {
            if ( checkbox.checked )
            {
              checkbox.checked = false;
            }
            else
            {
              checkbox.checked = true;
            }
        }

    return true;
}

function setCheckboxes( container_id, state ) 
/* set checboxes array to true/false*/
{
    var checkboxes = document.getElementById(container_id).getElementsByTagName('input');

    for ( var i = 0; i < checkboxes.length; i++ ) {
        if ( checkboxes[i].type == 'checkbox' ) {
            checkboxes[i].checked = state;
        }
    }

    return true;     
}