var error = false;

function validate_begin(field)
{
 //  Two regexp checks now. First one checks for bad words and second checks if
 // there are any lowercase characters and negates the result (Hence equivalent
 // to checking if all the characters are uppercase). Notice no 'i' flag in the
 // second. Also the regexps can now match strings such as 'o - r - a - l' - try
 // it, pretty cool, eh?
 var re = /f(\W){0,3}u(\W){0,3}c(\W){0,3}k|s(\W){0,3}u(\W){0,3}c(\W){0,3}k|c(\W){0,3}o(\W){0,3}c(\W){0,3}k|s(\W){0,3}h(\W){0,3}i(\W){0,3}t|c(\W){0,3}u(\W){0,3}n(\W){0,3}t|b(\W){0,3}a(\W){0,3}s(\W){0,3}t(\W){0,3}a(\W){0,3}r(\W){0,3}d|a(\W){0,3}r(\W){0,3}s(\W){0,3}e|l(\W){0,3}u(\W){0,3}c(\W){0,3}i(\W){0,3}f(\W){0,3}e(\W){0,3}r|s(\W){0,3}a(\W){0,3}t(\W){0,3}a(\W){0,3}n|h(\W){0,3}a(\W){0,3}i(\W){0,3}l|b(\W){0,3}o(\W){0,3}n(\W){0,3}e(\W){0,3}r|w(\W){0,3}i(\W){0,3}c(\W){0,3}k(\W){0,3}e(\W){0,3}d|qt|qn|qb|qp|qo|qe|qk|&|>|<font|http:|www\.|\.org|\.com|\.co\.uk|\.net/i;
 var re2 = /[a-z]/;
 return !((re.test(field.value))||(!re2.test(field.value)));
 }

function catch_error(field)
{
  //  Four regexps now, grouped for readability. First checks for bad words,
  // second for inappropriate topics, third for formatting, and last for
  // uppercase evil. They have been separated for friendlier user-feedback.
  var re = /f(\W){0,3}u(\W){0,3}c(\W){0,3}k|s(\W){0,3}u(\W){0,3}c(\W){0,3}k|c(\W){0,3}o(\W){0,3}c(\W){0,3}k|s(\W){0,3}h(\W){0,3}i(\W){0,3}t|c(\W){0,3}u(\W){0,3}n(\W){0,3}t|b(\W){0,3}a(\W){0,3}s(\W){0,3}t(\W){0,3}a(\W){0,3}r(\W){0,3}d|a(\W){0,3}r(\W){0,3}s(\W){0,3}e/i;
  var re3 = />|<font/i;
  var re4 = /[a-z]/;
  var re5 = /http:|www\.|\.org|\.com|\.co\.uk|\.net/i;
  var re6 = /[&]/i;
  var re7 = /l(\W){0,3}u(\W){0,3}c(\W){0,3}i(\W){0,3}f(\W){0,3}e(\W){0,3}r|s(\W){0,3}a(\W){0,3}t(\W){0,3}a(\W){0,3}n|b(\W){0,3}o(\W){0,3}n(\W){0,3}e(\W){0,3}r|w(\W){0,3}i(\W){0,3}c(\W){0,3}k(\W){0,3}e(\W){0,3}d/i;
  var re8 = /h(\W){0,3}a(\W){0,3}i(\W){0,3}l|qt|qn|qb|qp|qo|qe|qk/i;

  if (re.test(field.value))
  {
   alert('This submission cannot be posted! There\'s a line which appears to contain an abuse or swear word.');
  }

  else if (re3.test(field.value))
  {
   alert('We aren\'t able to accept your submission like this! You appear to be using formatting - e.g. the symbol \> - in one of the lines. Please enter plain text.');
  }
  else if (!re4.test(field.value))
  {
   alert('Sorry! Either you haven\'t entered information in all the boxes \nor else you\'ve tried to submit part of the posting in all capital letters.\nSteps to take: Start your posting from the first input box (i.e. Your name),\nfill in all the boxes \nand ensure no part of your posting is in all capital letters.\nFor example, HELLO! is not allowed but Hello! is. \nThanks.');
  }
  else if (re5.test(field.value))
  {
   alert('Sorry! You can\'t put web addresses or email addresses\nin any part of your submission\nother than in the box where you are asked\nto give your own email address.\nPlease correct this.');
  }
  else if (re6.test(field.value))
  {
   alert('You cannot use \"\&\" in your details. Please use \"and\".');
  }
  else if (re7.test(field.value))
  {
   alert('This submission cannot be posted. It appears to relate to a topic about which we aren\'t accepting postings.');
  }
  else if (re8.test(field.value))
  {
   alert('Sorry. Postings from you are not being accepted.');
  }
 field.focus();
 error = true;
 }

function validateRequestForm(form)
{
 var titleStatus = validateTitle(form.title);
 var descriptionStatus = validateDescription(form.opening);
 var submitterStatus = validateSubmitter(form.submitter);
 var emailStatus = validateEmail(form.email);

  if (submitterStatus&&emailStatus&&titleStatus&&descriptionStatus)
 {
  return confirm('Your posting is ready to send.\n\nClick CANCEL if you want to change your posting. \n\nClick OK to submit your posting \n\t and then WAIT for the notice of success. \n\nRemember, once you click OK it goes up on The Virtual Church on the internet.\nDo make sure your happy with what you\'re about to post.\n\n(Sorry: Postings avoiding the maximum length \nby pasting in text will be removed.)');

 }
 else
 {
  error = false;
  if (!submitterStatus&&!error) errorSubmitter(form.submitter);
  if (!emailStatus&&!error) errorEmail(form.email);
  if (!titleStatus&&!error) errorTitle(form.title);
  if (!descriptionStatus&&!error) errorDescription(form.opening);
  return false;
 }
}

function validateResponseForm(form)
{
 var titleStatus = validateTitle(form.respondertitle);
 var descriptionStatus = validateDescription(form.responderopening);
 var submitterStatus = validateSubmitter(form.responder);
 var emailStatus = validateEmail(form.responderemail);

  if (submitterStatus&&emailStatus&&titleStatus&&descriptionStatus)
 {
  return confirm('Your posting is ready to send.\n\nClick CANCEL if you want to change your posting. \n\nClick OK to submit your posting \n\t and then WAIT for the notice of success. \n\nRemember, once you click OK it goes up on The Virtual Church on the internet.\nDo make sure your happy with what you\'re about to post.\n\n(Sorry: Postings avoiding the maximum length \nby pasting in text will be removed.)');

 }
 else
 {
  error = false;
  if (!submitterStatus&&!error) errorSubmitter(form.responder);
  if (!emailStatus&&!error) errorEmail(form.responderemail);
  if (!titleStatus&&!error) errorTitle(form.respondertitle);
  if (!descriptionStatus&&!error) errorDescription(form.responderopening);
  return false;
 }
}
function validateJoinForm(form)
{
 var submitterStatus = validateSubmitter(form.subscribername);
 var emailStatus = validateEmail(form.address);

  if (submitterStatus&&emailStatus)
 {
  return confirm('Your submission is ready to send.\n\nClick CANCEL if you want to change your details. \n\nClick OK to submit your message \n\t and then WAIT for details.');

 }
 else
 {
  error = false;
  if (!submitterStatus&&!error) errorSubmitter(form.subscribername);
  if (!emailStatus&&!error) errorEmail(form.address);
  return false;
 }
}

function validateTitle(field)
{
 if (field.value.length == 0)
 {
  return false;
 }
 else
 {
   var re = /[^ \'.,!@\-a-zA-Z_0-9]/;
  return !re.test(field.value);
 }
}

function validateDescription(field)
{
  if (field.value.length == 0)
    {
      return false;
    }
  else
    {
      return validate_begin(field);
    } 
}

function validateSubmitter(field)
{
 if (field.value.length == 0)
 {
  return false;
 }
 else
 {
  var re = /[^ .,\-a-zA-Z]/;
  return !re.test(field.value);
 }
}

function validateEmail(field)
{
 if (field.value.length == 0)
 {
  return false;
 }
 else
 {
  var re = /^[a-zA-Z_0-9\-.]+(\+[a-zA-Z_0-9\-.]+)?@[a-zA-Z_0-9\-.]+\.[a-zA-Z_0-9\-.]+$/;
  return re.test(field.value);
 }
}

function errorTitle(field)
{
  if (field.value.length == 0)
    {
      alert("Please enter the topic of your posting - what it\'s about.");
    }
  else
  {
    var re = /[^ \'.,!@\-a-zA-Z_0-9]/;
    alert('The topic you give your posting cannot contain a \"'+ re.exec(field.value)[0]+ '\" as one of the characters in it!');
  }
  field.focus();
  error = true;
}

function errorDescription(field)
{
  if (field.value.length == 0)
    {
      alert('Please enter in your posting details - what you want to communicate.');
    }
  else
    {
      return catch_error(field);
    }
}

function errorSubmitter(field)
{
 if (field.value.length == 0)
 {
  alert("Please enter your name. \n\nYou may use an online name if you wish.");
 }
 else
 {
  var re = /[^ .,\-a-zA-Z]/;
  alert('Your name cannot contain a \"'+ re.exec(field.value)[0]+ '\" as one of the characters in it!');
 }
 field.focus();
 error = true;
}

function errorEmail(field)
{
  var nodeObj2 = document.getElementById('title');
 if (field.value.length == 0)
 {
  alert('Please enter your email address.\n\t This will not be displayed.\n\t It will only be for our reference.');
 }
 else
 {
  var re = /[^a-zA-Z_0-9\-.@+]/;
  reResult = re.exec(field.value);
  if (reResult == null)
  {
   if (!/@/.exec(field.value)) alert('Your email address must contain\n\t an @ character!');
   else if (!/@.*\./.exec(field.value)) alert('Your email address must contain\n\t  a . character after the @!');
   else if (!/.+@/.exec(field.value)) alert('Your email address must contain\n\t  a useresidence before the @ character!');
   else if (!/@[^@]+\..+/.exec(field.value)) alert('Your email address must contain\n\t  a valid domain name after the @ character!');
  }
  else
  {
   alert('Your email address cannot contain a '+ reResult[0]+ ' character!');
   nodeObj2.focus();
   return true;
  }
 }
 field.focus();
 error = true;
}