function changePage(page)
{
	document.getElementById("MainFrame").src = page;
}

function openAndCloseDiv(idDiv)
{
	if (document.getElementById(idDiv).style.visibility == "hidden"){
		document.getElementById(idDiv).style.visibility = "visible";
	} else {
		document.getElementById(idDiv).style.visibility = "hidden";
	}
}
function cleanForm()
{
	document.getElementById("subjectField").value = "";
	document.getElementById("nameField").value = "";
	document.getElementById("emailField").value = "";
	document.getElementById("messageField").value = "";
}
function submitForm()
{
var invalid;
	invalid = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/;
	if(document.getElementById("subjectField").value == "" || document.getElementById("subjectField").value == "undefined")
	{	
		alert("Indique o assunto de sua mensagem.");
		document.getElementById("subjectField").focus();
		return;
	}
	if(document.getElementById("nameField").value == "" || document.getElementById("nameField").value == "undefined")
	{
		alert("É preciso preencher o campo Nome.");
		document.getElementById("nameField").focus();
		return;
	}
	if(document.getElementById("emailField").value == "" || document.getElementById("emailField").value == "undefined")
	{
		alert("Por favor, insira seu e-mail.");
		document.getElementById("emailField").focus();
		return;
	}
	if (invalid.test(document.getElementById("emailField").value) == false) 
	{
		alert("O endereço de e-mail fornecido é inválido.");
		document.getElementById("emailField").focus();
		return (false); 
	}
	if(document.getElementById("messageField").value == "" || document.getElementById("messageField").value == "undefined")
	{
		alert("Escreva seu comentário ou sugestão.");
		document.getElementById("messageField").focus();
		return;
	}
	document.getElementById("formulario").submit();
}

function redirect(URL)
{
	if (URL.indexOf("http://") == -1)
		URL = "http://" + URL;
	oRedirectWindow = window.open('redirect.asp?URL=' + URL, '', "height=110,width=410,status=no,toolbar=no,menubar=no,location=no");
	oRedirectWindow.focus();
}