var current_tab = 's';

function dn_tab_ajax(tab_op)
{
    var btnRelatedStories = document.getElementById( 'dn_btn_r' );
    var btnSummary = document.getElementById( 'dn_btn_s' );
    var btnNext = document.getElementById( 'dn_btn_n' );
    switch( tab_op )
    {
        case 'r':
            btnRelatedStories.className = 'sbtv_dn_btn_r_c';
            btnSummary.className = 'sbtv_dn_btn_s';
            btnNext.className = 'sbtv_dn_btn_n';
            break;
        case 's':
            btnRelatedStories.className = 'sbtv_dn_btn_r';
            btnSummary.className = 'sbtv_dn_btn_s_c';
            btnNext.className = 'sbtv_dn_btn_n';
            break;
        case 'n':
            btnRelatedStories.className = 'sbtv_dn_btn_r';
            btnSummary.className = 'sbtv_dn_btn_s';
            btnNext.className = 'sbtv_dn_btn_n_c';
            break;
    }
    var sParams = 'op=' + tab_op + '&id=' + DailyNewsId;
    sbtvAjax.Post( '/DailyNews/Panel.aspx',
        sParams,
        handleDnTabResponse
        );
}

function handleDnTabResponse( sResponse )
{
    sHtml = sResponse.split('<!--' + 'CONTENTMARKER' + '-->')[1];
    document.getElementById('dn_panel').innerHTML = sHtml;
//    alert( sHtml );
}

function dn_tab(new_tab)
{
    var tabSummary = document.getElementById( 'dn_tab_s' );
    var btnSummary = document.getElementById( 'dn_btn_s' );
    var tabTranscript = document.getElementById( 'dn_tab_t' );
    var btnTranscript = document.getElementById( 'dn_btn_t' );
    switch( new_tab )
    {
        case 's':
            tabTranscript.style.display = 'none';
            btnTranscript.className = 'sbtv_dn_btn_t';
            tabSummary.style.display = 'block';
            btnSummary.className = 'sbtv_dn_btn_s_c';
            break;
        case 't':
            tabSummary.style.display = 'none';
            btnSummary.className = 'sbtv_dn_btn_s';
            tabTranscript.style.display = 'block';
            btnTranscript.className = 'sbtv_dn_btn_t_c';
            break;
    }
}

function dn_discuss()
{
    var sUrl = cs_path + "/Discussions?tk=Daily News";
    window.open( sUrl, "_blank" );
}