function writeFooter() {
   var months = new Array(12);
   months[0]  = "January";
   months[1]  = "February";
   months[2]  = "March";
   months[3]  = "April";
   months[4]  = "May";
   months[5]  = "June";
   months[6]  = "July";
   months[7]  = "August";
   months[8]  = "September";
   months[9]  = "October";
   months[10] = "November";
   months[11] = "December";
  lastmod = document.lastModified     // get string of last modified date
  lastmoddate = Date.parse(lastmod)   // convert modified string to date
  if (lastmoddate == 0) { 
    lastmod="Unknown"   // unknown date (or January 1, 1970 GMT)
  } else {
    lastmoddate= new Date(lastmod)     // convert modified string to date
    var lastmodmonth=lastmoddate.getMonth();
    lastmod=lastmoddate.getDate() + " "+ months[lastmodmonth] + ", " + lastmoddate.getFullYear();
  }
  document.write("<br><br><br><br><br><br><br><br><br><br><br><br><span class=footer><center>This page last updated on " + lastmod + ".</center></span>");
}
