function enforceLength (checkme, minlen, maxlen, changeme)
  {
      currentlength = checkme.value.length;
      if (currentlength > maxlen )
        {
          checkme.value = checkme.value.substring(0,maxlen);
          charactersleft = 0;
        }
       else
        {
          charactersleft = maxlen - currentlength;
        }
          changeme.value = charactersleft;
          return true;
        }