//===================================
function trim(arg,func) {
//===================================

var trimvalue = "";
arglen = arg.length;
if (arglen < 1) return trimvalue;

if (func == "left" || func== "both") {
i = 0;
pos = -1;
while (i < arglen) {
if (arg.charCodeAt(i) != 32 &&
!isNaN(arg.charCodeAt(i))) {
pos = i;
break;
}
i++;
}
}

if (func == "right" || func== "both") {
var lastpos = -1;
i = arglen;
while (i >= 0) {
if (arg.charCodeAt(i) != 32 &&
!isNaN(arg.charCodeAt(i))) {
lastpos = i;
break;
}
i--;
}
}

if (func == "left") {
trimvalue = arg.substring(pos,arglen-1);
}

if (func == "right") {
trimvalue = arg.substring(0,lastpos+1);
}

if (func == "both") {
trimvalue = arg.substring(pos,lastpos + 1);
}

return trimvalue;

}




function testing_form_mail(F) {

		var errMsg = "";
		var chars = " 0123456789abcdefghijklmnopqrstuvwxyzçéèáàãõíìóòúù";
		var i = 0;
		erro = 0;
		
		// Valida os campos.
		//if (Trim(F.name.value).length == 0) errMsg += '- O seu nome é um campo obrigatório.\n';
		if (trim(F.nome.value,'both').length == 0) errMsg += '- O seu nome é um campo obrigatório.\n';
		//if (F.email.value.length == 0) errMsg += '- O seu endereço de e-mail é um campo obrigatório.\n';
		//if (Trim(F.text.value).length == 0) errMsg += '- Escreva um comentário sobre o "Notícias da Amadora".\n';
		if (trim(F.mensagem.value,'both').length == 0) errMsg += '- Escreva a mensagem para o "Notícias da Amadora".\n';

/*
		for (var i = 0; i < F.name.value.length; i++) {
			if (chars.indexOf(F.name.value.toLowerCase().substring(i,i + 1)) == -1) {
				F.name.value =	F.name.value.substring(0,i) + F.name.value.substring(i + 1, F.name.value.length);
				--i;
			}
		}
		
		while (F.name.value.indexOf("  ") >= 0) F.name.value = replaceChars(F.name.value, "  ", " ");
		while (F.name.value.substring(0,1) == " ") F.name.value = F.name.value.substring(1,F.name.value.length - 1);
		while (F.name.value.substring(F.name.value.length - 1,F.name.value.length) == " ") F.name.value = F.name.value.substring(0,F.name.value.length - 1);
*/
		
		if (errMsg) { alert("Existem erros!\n\n" + errMsg + "\nPor favor corrija e tente novamente."); return(false); }
		
		//if (confere(F.email.value, F.name.value) == "0") { return(false) ;}
		
		return(true);
	}

	function replaceChars(entry, old_char, new_char) {
		while (entry.indexOf(old_char)>-1) {
			pos = entry.indexOf(old_char);
			entry = "" + (entry.substring(0, pos) + new_char + 
			entry.substring((pos + old_char.length), entry.length));
		}
		return entry;
	}
	
	
	
	
	
// INSPECÇÃO DOS ENDEREÇOS DE E-MAIL

function confere (emailStr, pessoa) {

/* 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=emailStr.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. */

alert("O email do " + pessoa + " contém erros (confira o @ e pelo menos um '.')");
return 0;
}
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) {
alert("O username do " + pessoa + " contém caracteres inválidos!");
return 0;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("O domínio do " + pessoa + " contém caracteres inválidos!");
return 0;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("O username do " + pessoa + " é inválido.");
return 0;
}

/* 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) {
alert("O IP do email do " + pessoa + "  é inválido!");
return 0;
   }
}
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) {
alert("O domínio do email do " + pessoa + " é inválido!");
return 0;
   }
}

/* 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) {
alert("Corrija o e-mail do " + pessoa + " . Tenha em atenção que um endereço de e-mail tem que acabar num dos domínios internacionais de topo (exemplos: .com .net .org .info .biz .gov .mil) ou num domínio referente a um país, com apenas 2 caracteres (exemplos: .pt .br)");
return 0;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("Ao endereço de email do " + pessoa + " parece faltar um domínio. Corrija-o por favor!");
return 0;
}

// If we've gotten this far, everything's valid!
return true;
}