function check_comment(form){
if (form.name.value == ""){
alert("Digite o seu nome");
form.name.focus();
return (false);
}
var reEmail = /^[\w-]+(\.[\w-]+)*@(([A-Za-z\d][A-Za-z\d-]{0,61}[A-Za-z\d]\.)+[A-Za-z]{2,6}|\[\d{1,3}(\.\d{1,3}){3}\])$/;

	if (form.mail.value == "")
	{
		alert("Erro ! Digite seu E-mail");
		form.mail.focus();
		return (false);
	}
	if(reEmail.test(form.mail.value)){}
	else
	{
		alert("Erro ! Seu E-mail INVALIDO");
		form.mail.focus();
		return (false);
	}
if (form.comments.value.length < 10){
alert("Seu comentário deve ter de 10 a 200 caracteres")
form.comments.focus();
return (false);
}
if (form.comments.value.length > 200){
alert("Seu comentário deve ter de 10 e 200 caracteres")
form.comments.focus();
return (false);
}
return (true);
}

function setCookie(name, value, expires, path, domain, secure) {
var curCookie = name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
document.cookie = curCookie;
}

function getCookie(name) {
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0) return null;
} else
begin += 2;
var end = document.cookie.indexOf(";", begin);
if (end == -1)
end = dc.length;
return unescape(dc.substring(begin + prefix.length, end));
}

function deleteCookie(name, path, domain) {
if (getCookie(name)) {
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}

function insertext(open, close, spot){
	msgfield = document.forms['comment'].elements['comments'];

	// IE support
	if (document.selection && document.selection.createRange){
		msgfield.focus();
		sel = document.selection.createRange();
		sel.text = open + sel.text + close;
		msgfield.focus();
	}

	// Moz support
	else if (msgfield.selectionStart || msgfield.selectionStart == '0'){
		var startPos = msgfield.selectionStart;
		var endPos = msgfield.selectionEnd;

		msgfield.value = msgfield.value.substring(0, startPos) + open + msgfield.value.substring(startPos, endPos) + close + msgfield.value.substring(endPos, msgfield.value.length);
		msgfield.selectionStart = msgfield.selectionEnd = endPos + open.length + close.length;
		msgfield.focus();
	}

	// Fallback support for other browsers
	else {
		msgfield.value += open + close;
		msgfield.focus();
	}

	return;
}