function start_up() {
  sessionStorage.removeItem('rec_list');
  sessionStorage.setItem('recipients',JSON.stringify(guys));
  pop_guys();
  document.getElementById('maxsizeblurb').textContent = document.getElementsByName('MAX_FILE_SIZE')[0].value / 1024 / 1024;
  console.log('start_up');
}

function pop_guys() {
  sel=document.getElementById('recipients');
  if (sel == null) {
    return(false);
  }
  guys = JSON.parse(sessionStorage.getItem('recipients'));
  sel.length = 0;
  var opt=document.createElement('option');
  opt.text='- Select -';
  opt.value='';
  sel.add(opt);
  var opt=document.createElement('option');
  opt.text='- Enter it in -';
  opt.value='new';
  sel.add(opt);
  var opt=document.createElement('option');
  opt.text='- Edit your quick list -';
  opt.value='edit';
  sel.add(opt);
  if (guys == null) { return(false); }
  for (i=0; i<guys.length; ++i) {
    var opt=document.createElement('option');
    opt.text=guys[i];
    sel.add(opt);
  }
}

function parse_quick_list(widget) {
  if (widget.value == 'new') {
    document.getElementById('enter_new_recipient').style.display='';
    document.getElementById('new_entries').style.display='';
    document.getElementById('pre_notify[0]').value='Enter an email address';
    document.getElementById('pre_notify[1]').value='Enter twice to verify';
    document.getElementById('send_to_button').innerHTML='Send to this recipient just this once.';
  } else if (widget.value == 'edit') {
    if (confirm('If you edit your quick list, this will reload the form after you are done.  OK?')) {
      window.location=('imap_scan.php');
    }
  } else if (widget.value == '') {
    document.getElementById('enter_new_recipient').style.display='none';
    document.getElementById('new_entries').style.display='none';
  } else {
    document.getElementById('enter_new_recipient').style.display='';
    document.getElementById('new_entries').style.display='none';
    document.getElementById('pre_notify[0]').value=widget.value;
    document.getElementById('pre_notify[1]').value=widget.value;
    document.getElementById('send_to_button').innerHTML='Send to this recipient.';
    another_recipient();
  }
}

function add_cc_me() {
  cc=document.getElementById('ccme');
  guys = JSON.parse(sessionStorage.getItem('rec_list'));
  if (guys == null) { guys=new Array(); }
  build_rec_list(guys);
  if (cc.checked) {
    xx = '';
    xx = xx + '<input type=hidden id=cc_me name=cc_me value="1">';
    xx = xx + '<span id="del_rec['+i+']" onClick = "del_rec('+i+');return(false);" >   </span>';
    xx = xx + '<span id="disp_rec['+i+']">Cc:&nbsp;(you!)</span><br>';
  } else {
    xx = '';
  }
  zz=dd.innerHTML;
  dd.innerHTML=zz+xx;
}

function del_rec(idnum) {

  nn = 'notify['+idnum+']';
  xr = 'del_rec['+idnum+']';
  dr = 'disp_rec['+idnum+']';

  nne=document.getElementById(nn);
  nnev=nne.value;
  xre=document.getElementById(xr);
  dre=document.getElementById(dr);

  pp=nne.parentElement;

  pp.removeChild(nne);
  pp.removeChild(xre);
  pp.removeChild(dre);

  newguys = new Array();
  guys = JSON.parse(sessionStorage.getItem('rec_list'));
  if (guys == null) { guys=new Array(); }
  ng=0;
  for (i=0;i<guys.length;++i) {
    if (nnev == guys[i]) { continue; }
    newguys[ng++]=guys[i];
  }
  sessionStorage.setItem('rec_list',JSON.stringify(newguys));
  build_rec_list(newguys);
  document.getElementById('recipients').value='';
  add_cc_me();

}

function build_rec_list(guys) {
  xx='';
  dd=document.getElementById('rec_list');
  dd.innerHTML='';
  if (guys.length == 0) {
    xx = 'To:<br>';
  }
  for (i=0; i<guys.length; ++i) {
    xx = xx + '<input type=hidden id=notify['+i+'] name=notify['+i+'] value="'+guys[i]+'">';
    xx = xx + '<span style="border: black 1px solid; margin:3px; margin-top:0px; background:white; color:black; cursor:default;" id="del_rec['+i+']" onClick = "del_rec('+i+');return(false);" >&nbsp;X&nbsp;</span>&nbsp;';
    xx = xx + '<span id="disp_rec['+i+']">To:&nbsp;'+guys[i]+'</span><br>';
  }
  dd.innerHTML=xx;
}

function another_recipient() {
  z1=document.getElementById('pre_notify[0]');
  z2=document.getElementById('pre_notify[1]');
  if (z1.value != z2.value)	{ alert('The entries must match.'); return(false); }
  if (z1.value == '')		{ alert('You may not save empties.'); return(false); }
  guys = JSON.parse(sessionStorage.getItem('rec_list'));
  if (guys == null) { guys=new Array(); }
  guys.push(z1.value);
  guys.sort();
  // REMOVE DUPES BY SOME RANDOM GENIUS ON THE INTERWEB
  guys = guys.filter (function (value, index, array) { return array.indexOf (value) == index; });
  sessionStorage.setItem('rec_list',JSON.stringify(guys));
  build_rec_list(guys);
  document.getElementById('enter_new_recipient').style.display='none';
  document.getElementById('recipients').value='';
  add_cc_me();
  return(false);
} 

function delete_this_guy_from_quick() {
  z1=document.getElementById('pre_notify[0]');
  z2=document.getElementById('pre_notify[1]');
  if (z1.value != z2.value)	{ alert('The entries must match before deleting.'); return(false); }
  if (z1.value == '')		{ alert('You may not save empties.'); return(false); }
  if (!confirm('Are you sure?')) { return(false); }
  guys = JSON.parse(sessionStorage.getItem('recipients'));
  if (guys == null) { return(false); }
  loc=guys.indexOf(z1.value);
  guys.splice(loc,1);
  guys = guys.filter (function (value, index, array) { return array.indexOf (value) == index; });
  sessionStorage.setItem('recipients',JSON.stringify(guys));
  pop_guys();
  document.getElementById('enter_new_recipient').style.display='none';
  document.getElementById('recipients').value='';
  return(false);
}

function checkprenotify(num){
  if (num == 0) {
    if (document.getElementById('pre_notify[0]').value =='Enter an email address') {
      document.getElementById('pre_notify[0]').value ='';
    }
  }
  if (num == 1) {
    if (document.getElementById('pre_notify[1]').value =='Enter twice to verify') {
      document.getElementById('pre_notify[1]').value ='';
    }
  }
}

function save_this_guy_to_quick() {
  z1=document.getElementById('pre_notify[0]');
  z2=document.getElementById('pre_notify[1]');
  if (z1.value != z2.value)	{ alert('The entries must match before saving.'); return(false);}
  if (z1.value == '')		{ alert('You may not save empties.'); return(false);}
  guys = JSON.parse(sessionStorage.getItem('recipients'));
  if (guys == null) { guys=new Array(); }
  guys.push(z1.value);
  guys.sort();
  // REMOVE DUPES BY SOME RANDOM GENIUS ON THE INTERWEB
  guys = guys.filter (function (value, index, array) { return array.indexOf (value) == index; });
  sessionStorage.setItem('recipients',JSON.stringify(guys));
  pop_guys();
  document.getElementById('enter_new_recipient').style.display='none';
  document.getElementById('recipients').value='';
  return(false);
}

function check_form_validity() {
  if (!check_valid_sender_emails()) {
    return(false);
  }
  if (!check_valid_files()) {
    return(false);
  }
  if (!check_valid_select_recipients()) {
    return(false);
  }
  if (!check_valid_note()) {
    return(false);
  }
  if (!check_subject()) {
    return(false);
  }
  if (!check_blank_recaptcha()) {
    return(false);
  }
  return(true);
}

function check_valid_sender_emails() {
  q=document.getElementById('email1');
  r=document.getElementById('email2');
  if (q.value == '' || r.value == '') {
    alert('You must enter your email twice to send.');
    return(false);
  }
  if (q.value != r.value) {
    alert('Your two email entries do not match.');
    return(false);
  }
  return(true);
}

function check_valid_files() {
  q=document.getElementById('userfile[]');
  if (q.value == '') {
    alert('Choose at least one file, please.');
    return(false);
  }
  if (q.files.length > 5) {
    alert('You cannot choose more than five files.');
    return(false);
  }
  return(true);
}

function check_valid_select_recipients() {
  q=document.getElementById('notify[]');
  if (q.selectedOptions.length == 0) {
    alert('Choose at least one recipient, please.');
    return(false);
  }
  return (true);
}

function check_valid_select_recipients_xx() {
  q=document.getElementById('notify[]');
  if (q.selectedOptions.length == 0) {
    alert('Choose at least one recipient, please.');
    return(false);
  }
  return (true);
};

function check_subject() {
  q=document.getElementById('subject');
  if (q.value == 'Replace this subject.' ) {
    alert('Please replace the subject with something meaningful.');
    return(false);
  }
  return(true);
}

function check_valid_note() {
  q=document.getElementById('note');
  if (q.value == 'Replace this text with a note to your recipient about the file.' || q.value == '') {
    alert('Please replace the note with something meaningful.');
    return(false);
  }
  var text=q.value;
  var reg=/^[a-zA-Z0-9\,\?\.\!\@\#\$\%\-\'\+\ ]*$/;
  if (!reg.test(text)) {
    alert("Only letters, numbers, comma, ? . ! @ # $ % - + allowed");
    return(false);
  }
  return(true);
}

function check_blank_recaptcha() {
  q=document.getElementById('recaptcha_response_field');
  if (q.value == '') {
    alert('Please fill in the anti-spam box.');
    return(false);
  }
  return(true);
}



function checkauth() {
  alert('You must be logged in to your fnsheppard.com email account to send to free-text email addresses.');
  return(false);
}