function vary_about (ref_id)
{
  AboutBullet=document.getElementById('about_bullet');
  AboutList=document.getElementById('about_list');
  ResumeBullet=document.getElementById('resume_bullet');
  ResumeList=document.getElementById('resume_list');
  TechBullet=document.getElementById('tech_bullet');
  TechList=document.getElementById('tech_list');
  InternalBullet=document.getElementById('internal_bullet');
  InternalList=document.getElementById('internal_list');

  if (AboutList.className=='hidden') {
    AboutList.className='unhide';
    AboutBullet.className='hidden';
    ResumeBullet.className='unhide';
    ResumeList.className='hidden';
    TechBullet.className='unhide';
    TechList.className='hidden';
    InternalBullet.className='unhide';
    InternalList.className='hidden';
  }
  else {
    AboutList.className='hidden';
    AboutBullet.className='unhide';
  }
}