// ------------------------------------------------------------------------------------------
// Copyright AspDotNetStorefront.com, 1995-2007.  All Rights Reserved.
// http://www.aspdotnetstorefront.com
// For details on this license please visit  the product homepage at the URL above.
// THE ABOVE NOTICE MUST REMAIN INTACT. 
// ------------------------------------------------------------------------------------------

function validation()
{
   if(document.form_name.Name.value=="")
  {
  alert("You must enter your name");
  document.form_name.Name.focus();
  return (false);
  }
  
  if(document.form_name.SurName.value=="")
  {
  alert("You must enter your Surname");
  document.form_name.SurName.focus();
  return (false);
  }
  
  if(document.form_name.Email.value=="")
  {
  alert("You must enter Your Email.");
  document.form_name.Email.focus();
  return (false);
  }

  
  if (! isProperEmail(document.form_name.Email.value))
  {
    alert("You must enter proper Email address");
   document.form_name.Email.focus();
    return (false); 
  }
  
  

 if(document.form_name.Comments.value=="")
  {
  alert("You must enter Comments.");
  document.form_name.Comments.focus();
  return (false);
  }
  

return (true);
}


function isProperEmail(argEmail)
 {
	if (charOccurences(argEmail, '@') + charOccurences(argEmail, '.') < 2)
		return false

	var atPos = argEmail.indexOf('@')
	var dotPos = argEmail.indexOf('.')

	if((atPos == 0) || (atPos == (argEmail.length - 1)))
		return false

	if((dotPos == 0) || (dotPos == (argEmail.length - 1)))
		return false
	
	/* This logic is incorrect JMA 12/18/03 */
	/* if((atPos > dotPos) || (atPos == (dotPos - 1)))
		return false */
	
	/* The following variable tells the rest of the function whether or not
	to verify that the address ends in a two-letter country or well-known
	TLD.  1 means check it, 0 means don't. */
 
	var checkTLD=1;
 
	/* The following is the list of known TLDs that an e-mail address must end with. */
 
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
 
	/* The following pattern is used to check if the entered e-mail address
	fits the user@domain format.  It also is used to separate the username
	from the domain. */
 
	var emailPat=/^(.+)@(.+)$/;
 
	/* The following string represents the pattern for matching all special
	characters.  We don't want to allow special characters in the address. 
	These characters include ( ) < > @ , ; : \ " . [ ] */
 
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
 
	/* The following string represents the range of characters allowed in a 
	username or domainname.  It really states which chars aren't allowed.*/
 
	var validChars="\[^\\s" + specialChars + "\]";
 
	/* The following pattern applies if the "user" is a quoted string (in
	which case, there are no rules about which characters are allowed
	and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	is a legal e-mail address. */
 
	var quotedUser="(\"[^\"]*\")";
 
	/* The following pattern applies for domains that are IP addresses,
	rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	e-mail address. NOTE: The square brackets are required. */
 
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
 
	/* The following string represents an atom (basically a series of non-special characters.) */
 
	var atom=validChars + '+';
 
	/* The following string represents one word in the typical username.
	For example, in john.doe@somewhere.com, john and doe are words.
	Basically, a word is either an atom or quoted string. */
 
	var word="(" + atom + "|" + quotedUser + ")";
 
	// The following pattern describes the structure of the user
 
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
 
	/* The following pattern describes the structure of a normal symbolic
	domain, as opposed to ipDomainPat, shown above. */
 
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
 
	/* Finally, let's start trying to figure out if the supplied address is valid. */
 
	/* Begin with the coarse pattern to simply break up user@domain into
	different pieces that are easy to analyze. */
 
	var matchArray=argEmail.match(emailPat);
 
	if (matchArray==null)
		{
 
		/* Too many/few @'s or something; basically, this address doesn't
		even fit the general mould of a valid e-mail address. */
 
		return false;
		}
	var user=matchArray[1];
	var domain=matchArray[2];
 
	// Start by checking that only basic ASCII characters are in the strings (0-127).
 
	for (i=0; i<user.length; i++)
		{
		if (user.charCodeAt(i)>127)
			{
			return false;
			}
		}
	for (i=0; i<domain.length; i++)
		{
		if (domain.charCodeAt(i)>127)
			{
			return false;
			}
		}
 
	// See if "user" is valid 
 
	if (user.match(userPat)==null)
		{
		// user is not valid
		return false;
	}
 
	/* if the e-mail address is at an IP address (as opposed to a symbolic
	host name) make sure the IP address is valid. */
 
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null)
		{
		// this is an IP address
		for (var i=1;i<=4;i++)
			{
			if (IPArray[i]>255)
				{
				return false;
				}
			}
		return true;
		}
 
	// Domain is symbolic name.  Check if it's valid.
 
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++)
		{
		if (domArr[i].search(atomPat)==-1)
			{
			return false;
			}
		}
 
	/* domain name seems valid, but now make sure that it ends in a
	known top-level domain (like com, edu, gov) or a two-letter word,
	representing country (uk, nl), and that there's a hostname preceding 
	the domain or country. */
 
	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1)
		{
		return false;
		}
 
	// Make sure there's a host name preceding the domain.
	if (len<2)
		{
		return false;
		}
 
	// If we've gotten this far, everything's valid!
	return true;
}