function load_article(n, last)
{
  var text = document.getElementById('article');
  var header = document.getElementById('article_header');
  var main = document.getElementById('main');
  var temp_content = text.innerHTML;

  if(n == '0')
  {
    if(last != '')
    {
      header.innerHTML = 'Product Overview';
      text.innerHTML = document.getElementById('main').innerHTML;
    }
    else
    {
      //function incorrectly called, failsafe
      window.location.reload();
    }
  }
  else if(n == '1')
  {
    header.innerHTML = 'Patient View <a href="javascript:load_article(0,\'patient\');">&lt; Product Overview</a>';
    text.innerHTML = document.getElementById('patient').innerHTML;
    if(main.innerHTML == '') { main.innerHTML = temp_content; }
  }
  else if(n == '2')
  {
    header.innerHTML = 'Department View <a href="javascript:load_article(0,\'department\');">&lt; Product Overview</a>';
    text.innerHTML = document.getElementById('department').innerHTML; 
    if(main.innerHTML == '') { main.innerHTML = temp_content; }
  }
  else if(n == '3')
  {
    header.innerHTML = 'Physician/Nurse Triage Charting <a href="javascript:load_article(0,\'triage\');">&lt; Product Overview</a>';
    text.innerHTML = document.getElementById('triage').innerHTML;
    if(main.innerHTML == '') { main.innerHTML = temp_content; }
  }
  else if(n == '4')
  {
    header.innerHTML = 'Patient Discharge <a href="javascript:load_article(0,\'discharge\');">&lt; Product Overview</a>';
    text.innerHTML = document.getElementById('discharge').innerHTML; 
    if(main.innerHTML == '') { main.innerHTML = temp_content; }
  }
  else if(n == '5')
  {
    header.innerHTML = 'Clinical/Business Analytics &amp; Reporting <a href="javascript:load_article(0,\'reporting\');">&lt; Product Overview</a>';
    text.innerHTML = document.getElementById('reporting').innerHTML; 
    if(main.innerHTML == '') { main.innerHTML = temp_content; }
  }
  else
  {
    header.innerHTML = 'Product Overview';
    text.innerHTML = 'Article not found.';
  }
}