function insere_paragrafo(a)

{

	if (a==13)

	{

	document.form_mail.texto_mail.value = document.form_mail.texto_mail.value + "<br>";

	document.form_mail.texto_mail.focus();

	}

}



function numero(s){

	var i;

    if ((s == null) || (s.length == 0)) 

       if (numero.arguments.length == 1) return false;

       else return (numero.arguments[1] == true);

    for (i = 0; i < s.length; i++)

    {	var c = s.charAt(i);

        if (!(((c >= "0") && (c <= "9")) || (c=="+") || (c==")") || (c=="(") || (c==" "))) return false;}

    return true;}



function verifica_tel(campo,saida){

	if ((document.form_mail[campo].value)!=""){

		if (numero(document.form_mail[campo].value)==false){

			alert("wrong "+saida)

			document.form_mail[campo].focus()

			return false}}

	return true}


function E_Email (s){

	if ((s == null) || (s.length == 0)) 

       if (E_Email.arguments.length == 1) return false;

       else return (E_Email.arguments[1] == true);

    if (s==" ") return false;

    var i = 1;

    var sLength = s.length;

    while ((i < sLength) && (s.charAt(i) != "@"))

	    {i++}

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;

    else i += 2;

    while ((i < sLength) && (s.charAt(i) != "."))

		{i++}

    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;

    else return true;}



function verifica_email(){

	if ((document.form_mail.email.value)!=""){

		if (E_Email(document.form_mail.email.value)==false){

			alert("Wrong e-mail");

			document.form_mail.email.focus()

			return false}

	return true}}



function ve_tudo(){

	if(document.form_mail.nome.value=="") {

		alert("please insert name");

		document.form_mail.nome.focus()

		return false}



	if(document.form_mail.email.value=="") {

		alert("please insert e-mail");

		document.form_mail.email.focus()

		return false}

	

	if(document.form_mail.assunto.value=="") {

		alert("please insert subject");

		document.form_mail.assunto.focus()

		return false}



	if(document.form_mail.texto_mail.value=="") {

		alert("please insert text");

		document.form_mail.texto_mail.focus()

		return false}

	

	if(document.form_mail.telefone.value=="") {

		alert("Por favor preencha o Telefone");

		document.form_mail.telefone.focus()

		return false}



	return true}



function conta(){

	if (document.form_mail.nome.value.length>100){

		alert("name too long")

		document.form_mail.nome.focus()}



	if (document.form_mail.email.value.length>100){

		alert("e-mail too long")

		document.form_mail.email.focus()}



	if (document.form_mail.assunto.value.length>100){

		alert("subject too long")

		document.form_mail.assunto.focus()}

}



function converter(str){

	var saida = "";

	for (i = 0; i < str.length; i++){

		if (str.charAt(i) != "'"){

			saida =saida + str.charAt(i);}

		else {

			saida =saida + "´";}}

	return saida;}