function tabSwitch_2(active, number, tab_prefix, content_prefix) {   
       
    for (var i=1; i < number+1; i++) {   
      document.getElementById(content_prefix+i).style.display = 'none';   
      document.getElementById(tab_prefix+i).className = '';   
    }   
    document.getElementById(content_prefix+active).style.display = 'block';   
    document.getElementById(tab_prefix+active).className = 'active';       
       
}