function selectAllCheckboxes( formName )
{
    if( document.forms[formName].checkAll.checked == true )
    {
        for( i = 0; i < document.forms[formName].lists.length; i++ )
        {
            document.forms[formName].lists[i].checked = true;
        }
    }
    else
    {
        for( i = 0; i < document.forms[formName].lists.length; i++ )
        {
            document.forms[formName].lists[i].checked = false;
        }
    }
}