function swapTabDisplay(_activeTab, _contentID)
{
    var tabImageCollection = _activeTab.parentNode.getElementsByTagName("img");
    for (var i=0; i<tabImageCollection.length; i++)
    {        
        tabImageCollection[i].src = tabImageCollection[i].src.replace(/_on./,"_off.");
    }   
     
    _activeTab.getElementsByTagName("img")[0].src=_activeTab.getElementsByTagName("img")[0].src.replace(/_off./,"_on.");
    
    
    var contentContainerCollection = document.getElementById('tabbed_content_container').getElementsByTagName("div");
    for (var i=0; i<contentContainerCollection.length; i++)
    {
        if (contentContainerCollection[i].id.indexOf('tab_0') == 0) contentContainerCollection[i].style.display = 'none';
    }
    
    document.getElementById(_contentID).style.display = '';    
}