$options = array(
    'onActive' => 'function(title, description){
        description.setStyle("display", "block");
        title.addClass("open").removeClass("closed");
    }',
    'onBackground' => 'function(title, description){
        description.setStyle("display", "none");
        title.addClass("closed").removeClass("open");
    }',
    'startOffset' => 0,  // 0 starts on the first tab, 1 starts the second, etc...
    'useCookie' => true, // this must not be a string. Don't use quotes.
);
 
echo JHtml::_('tabs.start', 'tab_group_id', $options);
 
echo JHtml::_('tabs.panel', JText::_('PANEL_1_TITLE'), 'panel_1_id');
//Render any of the individual fields here...
 
echo JHtml::_('tabs.panel', JText::_('PANEL_2_TITLE'), 'panel_2_id');
//Render any of the individual fields here...
 
echo JHtml::_('tabs.end');