function showHome(){
    document.getElementById('Home').style.display = 'block';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
	document.getElementById('Announcement3').style.display = 'none'; 
	document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showProgram(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'block';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
	document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none'; 
	document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showCommittee(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'block';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none'; 
	document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showSession(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'block';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
	document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showSpeakers(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'block';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showLinks(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'block';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showPhotos(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'block';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showDates(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'block';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showLocation(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'block';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
	document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showSubmission(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'block';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
	document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showAnnouncement(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'block';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showAnnouncement2(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'block';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
}
function showAnnouncement3(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'block';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'none';
	
}function showContact(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'block';
	document.getElementById('PreRegistration').style.display = 'none';
}

function showPreRegistration(){
    document.getElementById('Home').style.display = 'none';
    document.getElementById('Program').style.display = 'none';
    document.getElementById('Committee').style.display = 'none';
    document.getElementById('Session').style.display = 'none';
	document.getElementById('SubmissionSuccess').style.display = 'none';
    document.getElementById('Speakers').style.display = 'none';
    document.getElementById('Links').style.display = 'none';
    document.getElementById('Photos').style.display = 'none';
    document.getElementById('Dates').style.display = 'none';
    document.getElementById('Location').style.display = 'none';
    document.getElementById('Submission').style.display = 'none';
    document.getElementById('Announcement').style.display = 'none';
    document.getElementById('Announcement2').style.display = 'none';
    document.getElementById('Announcement3').style.display = 'none';
    document.getElementById('Contact').style.display = 'none';
	document.getElementById('PreRegistration').style.display = 'block';
}



function showDescrip12(){
    document.getElementById('Descrip12').style.display = 'block';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip22(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'block';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip32(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'block';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip42(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'block';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip52(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'block';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip62(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'block';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip72(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'block';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip82(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'block';
    document.getElementById('Descrip92').style.display = 'none';
}

function showDescrip92(){
    document.getElementById('Descrip12').style.display = 'none';
    document.getElementById('Descrip22').style.display = 'none';
    document.getElementById('Descrip32').style.display = 'none';
    document.getElementById('Descrip42').style.display = 'none';
    document.getElementById('Descrip52').style.display = 'none';
    document.getElementById('Descrip62').style.display = 'none';
    document.getElementById('Descrip72').style.display = 'none';
    document.getElementById('Descrip82').style.display = 'none';
    document.getElementById('Descrip92').style.display = 'block';
}


function DivsMostradas(){
	// esta função retorna quantas divs estão visíveis
	for(i=2; i<=5; i++){ // o "for" começa do 2 porque o 1 sempre está visível
		// monta o nome da primeira caixa de cada linha: "div2", "Committee", "Session", "Dates"
		var nome = "author" + i;

		if(document.getElementById(nome).className == "classeInvisivel")
		{
			// se a classe da caixa é "classeInvisivel" (ou seja: a div está invisível), retorna o número anterior (porque é o último visível)
			return i-1;
		}
	}
	// se todos estão visíveis, retorna 5, que é a última linha
	return 5;
}


function MostraDiv(){

	// esta função mostra o div
	// numAtual armazena o número da última linha visível, usando a função "DivsMostradas", acima
	var numAtual = DivsMostradas();

	// numProximo armazena a próxima linha a mostrar
	var numProximo = numAtual + 1;
	// proximo armazena o nome da  div a mostrar
	var proximo = "author" + numProximo;
	// muda a classe da div para a classeVisivel
	document.getElementById(proximo).className = "classeVisivel";

	if(numProximo == 5)
	{
		// se foi mostrada a linha 5, desabilita o botão de Mostrar, porque foi atingido o máximo
		document.getElementById("botMostra").disabled = true;
	}
	// habilita o botão de Esconder
	document.getElementById("botEsconde").disabled = false;
}

function EscondeDiv(){
	// esta função esconde a última div
	// numAtual armazena o número da última linha visível, usando a função "DivsMostradas", acima
	var numAtual = DivsMostradas();
	// proximo armazena o nome da  última div visível
	var proximo = "author" + numAtual;
	// muda a classe da div para a "classeInvisivel"
	document.getElementById(proximo).className = "classeInvisivel";

	if(numAtual == 2)
	{
		// se foi escondida a linha 2, desabilita o botão de Esconder, porque só ficou a primeira linha
		document.getElementById("botEsconde").disabled = true;
	}
	// habilita o botão de Mostrar
	document.getElementById("botMostra").disabled = false;

	for(i=1;i<=3;i++){
		var nome = "authorc" + numAtual + "" + i;
		document.getElementById(nome).value = "";
	
	}
}

function mostraEscondeOutro()
{
	tiraCorVermelhaPorId("profile")
	var escolhido = document.getElementById("profile").value;
	var divOther = document.getElementById("divOther");
	if(escolhido == "Other")
	{
		divOther.style.display = "inline";
	}
	else
	{
		divOther.style.display = "none";
	}
}

function enviaForm()
{
	var last_name = document.getElementById("last_name").value;
	var first_name = document.getElementById("first_name").value;
	var identification_card = document.getElementById("identification_card").value;
	var affiliation = document.getElementById("affiliation").value;
	var department = document.getElementById("department").value;
	var email = document.getElementById("email").value;
	var phone = document.getElementById("phone").value;
	var fax = document.getElementById("fax").value;
	var profile = document.getElementById("profile").value;
	var profile_other = document.getElementById("profile_other").value;
	var title = document.getElementById("title").value;
	var keys = document.getElementById("keys").value;
	var abstract = document.getElementById("abstract").value;
	var language = document.getElementById("language").value;
	var cathegorie = document.getElementById("cathegorie").value;
	var session = document.getElementById("session").value;
	//var authors = document.getElementById("authors").value;
	var authorc11 = document.getElementById("authorc11").value;
	var authorc12 = document.getElementById("authorc12").value;
	var authorc13 = document.getElementById("authorc13").value;
	var authorc21 = document.getElementById("authorc21").value;
	var authorc22 = document.getElementById("authorc22").value;
	//var authorc23 = document.getElementById("authorc23").value;
	var authorc31 = document.getElementById("authorc31").value;
	var authorc32 = document.getElementById("authorc32").value;
	//var authorc33 = document.getElementById("authorc33").value;
	var authorc41 = document.getElementById("authorc41").value;
	var authorc42 = document.getElementById("authorc42").value;
	//var authorc43 = document.getElementById("authorc43").value;
	var authorc51 = document.getElementById("authorc51").value;
	var authorc52 = document.getElementById("authorc52").value;
	//var authorc53 = document.getElementById("authorc53").value;
	//var author = "";
//	for(i=0;i<3;i++)
//	{
//		var id = "authortype"+i;
//		if(document.getElementById(id).checked)
//			author = document.getElementById(id).value;
//	}
//	
	var pres = "";
	for(i=0;i<3;i++)
	{
		var id = "pres"+i;
		if(document.getElementById(id).checked)
			pres = document.getElementById(id).value;
	}
	
	//var str = "last_name="+last_name+"&first_name="+first_name+"&identification_card="+identification_card+"&affiliation="+affiliation+"&department="+department+"&email="+email+"&phone="+phone+"&fax="+fax+"&profile="+profile+"&profile_other="+profile_other+"&title="+title+"&keys="+keys+"&abstract="+abstract+"&language="+language+"&cathegorie="+cathegorie+"&session="+session+"&authors="+authors+"&pres="+pres;
	
	//var str = "last_name="+last_name+"&first_name="+first_name+"&identification_card="+identification_card+"&affiliation="+affiliation+"&department="+department+"&email="+email+"&phone="+phone+"&fax="+fax+"&profile="+profile+"&profile_other="+profile_other+"&title="+title+"&keys="+keys+"&abstract="+abstract+"&language="+language+"&cathegorie="+cathegorie+"&session="+session+"&authorc11="+authorc11+"&authorc12="+authorc12+"&authorc13="+authorc13+"&authorc21="+authorc21+"&authorc22="+authorc22+"&authorc23="+authorc23+"&authorc31="+authorc31+"&authorc32="+authorc32+"&authorc33="+authorc33+"&authorc41="+authorc41+"&authorc42="+authorc42+"&authorc43="+authorc43+"&authorc51="+authorc51+"&authorc52="+authorc52+"&authorc53="+authorc53+"&pres="+pres;
	
	var str = "last_name="+last_name+"&first_name="+first_name+"&identification_card="+identification_card+"&affiliation="+affiliation+"&department="+department+"&email="+email+"&phone="+phone+"&fax="+fax+"&profile="+profile+"&profile_other="+profile_other+"&title="+title+"&keys="+keys+"&abstract="+abstract+"&language="+language+"&cathegorie="+cathegorie+"&session="+session+"&authorc11="+authorc11+"&authorc12="+authorc12+"&authorc13="+authorc13+"&authorc21="+authorc21+"&authorc22="+authorc22+"&authorc31="+authorc31+"&authorc32="+authorc32+"&authorc41="+authorc41+"&authorc42="+authorc42+"&authorc51="+authorc51+"&authorc52="+authorc52+"&pres="+pres;
	
	document.getElementById("ajaxFrame").src = "abstract_submission.php?"+str;
}

function pintaCortVermelha(id)
{
	var id = 'lbl_' + id;
	document.getElementById(id).className = 'classeErro';
}

function tiraCorVermelha(src)
{
	var id = 'lbl_' + src.id;
	document.getElementById(id).className = '';
}


function tiraCorVermelhaPorId(id)
{
	var id = 'lbl_' + id;
	document.getElementById(id).className = '';
}