// Email Validation Javascript
// copyright 23rd March 2003, by Stephen Chapman, Felgall Pty Ltd

// You have permission to copy and use this javascript provided that
// the content of the script is not changed in any way.

function validateEmail(addr,man,db) 
{
	if (addr == '' && man) 
	{
  	if (db) alert('You email address is required for poetry submissions.');
  	return false;
	}
	
	var invalidChars = '\/\'\\ ";:?!()[]\{\}^|';
	for (i=0; i<invalidChars.length; i++) 
	{
  	if (addr.indexOf(invalidChars.charAt(i),0) > -1) 	
		{
    	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
      return false;
   	}
	}

	for (i=0; i<addr.length; i++) 
	{
  	if (addr.charCodeAt(i)>127) 
		{
      if (db) alert("Your email address must be in the form\nname@host.domain\nPlease Check and try again.");
      return false;
   	}
	}

	var atPos = addr.indexOf('@',0);
	if (atPos == -1) 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
   	return false;
	}

	if (atPos == 0) 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
   	return false;
	}

	if (addr.indexOf('@', atPos + 1) > - 1) 
	{
  	if (db) alert('email address must contain only one @');
  	return false;
	}

	if (addr.indexOf('.', atPos) == -1) 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
   	return false;
	}
	
	if (addr.indexOf('@.',0) != -1) 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
   	return false;
	}

	if (addr.indexOf('.@',0) != -1)
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
  	return false;
	}
	
	if (addr.indexOf('..',0) != -1) 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
  	return false;
	}

	var suffix = addr.substring(addr.lastIndexOf('.')+1);

	if (suffix.length != 2 && suffix != 'com' && suffix != 'net' && suffix != 'org' && suffix != 'edu' && suffix != 'int' && suffix != 'mil' && suffix != 'gov' & suffix != 'arpa' && suffix != 'biz' && suffix != 'aero' && suffix != 'name' && suffix != 'coop' && suffix != 'info' && suffix != 'pro' && suffix != 'museum') 
	{
  	if (db) alert('Your email address must be in the form\nname@host.domain\nPlease Check and try again.');
  	return false;
	}
	return true;
}