function check_form(f) {	
	if(document.getElementById("alerta_nome")){
		if(f.nome.value.length < 1 ){
			var obj = document.getElementById("alerta_nome");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.nome.focus(); // put the prompt in the name field 
			return false;	
		}		
	}
	if(document.getElementById("alerta_email")){		
		if(f.email.value.length < 1 ){
			var obj = document.getElementById("alerta_email");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.email.focus(); // put the prompt in the name field 
			return false;
		}
		if(!check_email(f.email.value)){
			var obj = document.getElementById("alerta_email");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.email.focus();
			return false;
		}
	}	
	if(document.getElementById("alerta_telefone")){
		if(f.telefone.value.length < 1 ){
			var obj = document.getElementById("alerta_telefone");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.telefone.focus(); // put the prompt in the name field 
			return false;
		}
	}
	if(document.getElementById("alerta_codigofpg")){
		if(f.codigofpg.value.length < 1 ){
			var obj = document.getElementById("alerta_codigofpg");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.codigofpg.focus(); // put the prompt in the name field 
			return false;
		}
	}
	if(document.getElementById("alerta_mensagem")){
		if(f.mensagem.value.length < 1 ){
			var obj = document.getElementById("alerta_mensagem");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.mensagem.focus(); // put the prompt in the name field 
			return false;
		}
	}
	if(document.getElementById("alerta_duvida")){
		if(f.duvida.value.length < 1 ){
			var obj = document.getElementById("alerta_duvida");
			obj.innerHTML = " <img src='/images/alerta_icone.gif' alt='Alerta' />";
			f.duvida.focus(); // put the prompt in the name field 
			return false;
		}
	}	
	if(document.getElementById("alerta_news_nome")){
		if(f.enviarnews_nome.value.length < 1 ){
			alert("Favor preencher o seu nome");
			var obj = document.getElementById("alerta_news_nome");
			obj.innerHTML = "*";
			f.enviarnews_nome.focus(); // put the prompt in the name field 
			return false;
		}
	}	
	
	if(document.getElementById("alerta_news_email")){		
		if(f.enviarnews_email.value.length < 1 ){
			alert("Favor preencher o seu e-mail");
			var obj = document.getElementById("alerta_news_email");
			obj.innerHTML = "*";
			f.enviarnews_email.focus(); // put the prompt in the name field 
			return false;
		}
		if(!check_email(f.enviarnews_email.value)){
			alert("E-mail inválido");
			var obj = document.getElementById("alerta_news_email");
			obj.innerHTML = "*";
			f.enviarnews_email.focus();
			return false;
		}
	}
	if(document.getElementById("alerta_nome_amigo")){
		if(f.enviarnews_amigoNome.value.length < 1 ){
			alert("Favor preencher o nome do seu amigo");
			var obj = document.getElementById("alerta_nome_amigo");
			obj.innerHTML = "*";
			f.enviarnews_amigoNome.focus(); // put the prompt in the name field 
			return false;
		}
	}
	if(document.getElementById("alerta_email_amigo")){		
		if(f.enviarnews_amigoEmail.value.length < 1 ){
			alert("Favor preencher o e-mail do seu amigo");
			var obj = document.getElementById("alerta_email_amigo");
			obj.innerHTML = "*";
			f.enviarnews_amigoEmail.focus(); // put the prompt in the name field 
			return false;
		}
		if(!check_email(f.enviarnews_amigoEmail.value)){
			alert("E-mail inválido");
			var obj = document.getElementById("alerta_email_amigo");
			obj.innerHTML = "*";
			f.enviarnews_amigoEmail.focus();
			return false;
		}
	}	
}

function check_email(e) {
ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

for(i=0; i < e.length ;i++){
	if(ok.indexOf(e.charAt(i))<0){ 
	return (false);}	
	} 
	if (document.images) {
		re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
		re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
		if (!e.match(re) && e.match(re_two)) {
			return (-1);	} 
	}
}

function limpar_alertas(l) {
	if(document.getElementById("alerta_nome")){
  	document.getElementById("alerta_nome").innerHTML= " <img src='/images/alerta_transp.gif' alt='' />";
	}
	if(document.getElementById("alerta_email")){
		document.getElementById("alerta_email").innerHTML=" <img src='/images/alerta_transp.gif' alt='' />";
	}
	if(document.getElementById("alerta_telefone")){
		document.getElementById("alerta_telefone").innerHTML=" <img src='/images/alerta_transp.gif' alt='' />";
	}
	if(document.getElementById("alerta_codigofpg")){
		document.getElementById("alerta_codigofpg").innerHTML=" <img src='/images/alerta_transp.gif' alt='' />";
	}
	if(document.getElementById("alerta_mensagem")){
		document.getElementById("alerta_mensagem").innerHTML=" <img src='/images/alerta_transp.gif' alt='' />";
	}
	if(document.getElementById("alerta_duvida")){
		document.getElementById("alerta_duvida").innerHTML=" <img src='/images/alerta_transp.gif' alt='' />";
	}	
	if(document.getElementById("alerta_news_nome")){
		document.getElementById("alerta_news_nome").innerHTML="";
	}
	if(document.getElementById("alerta_news_email")){
		document.getElementById("alerta_news_email").innerHTML="";
	}
	if(document.getElementById("alerta_nome_amigo")){
		document.getElementById("alerta_nome_amigo").innerHTML="";
	}
	if(document.getElementById("alerta_email_amigo")){
		document.getElementById("alerta_email_amigo").innerHTML="";
	}
	return false;
	
}

// -->