function showSubmenu(){
   // var d = document.getElementById('sub');
    //if(d.style.display == 'none'){
      document.getElementById('sub').style.display = "";
    //}
    //else{
      //   d.style.display = "none";
    //}
}

function hideSubmenu(){
      document.getElementById('sub').style.display = "none";
    
}


function exibeMes(campo){
    
var ca = campo.options[campo.selectedIndex].value;    

var xml;

if(window.XMLHttpRequest){
    xml = new XMLHttpRequest;
}
else{
    try{
        xml = new ActiveXObject('MSXML2.XMLHTTP.3.0');
    }
    catch(e){
        xml = new  ActiveXobject("Microsoft.XMLHTTP");  
    }
}

xml.onreadystatechange=function(){
    
    if(xml.readyState==1){
        document.getElementById('mes').innerHTML = "Aguarde, Carregando..";
    }
    else if(xml.readyState==4 && xml.status==200){
        document.getElementById('mes').innerHTML = xml.responseText;
        
        }
    }    




xml.open("GET","layout/mostraMes.php?ano="+ca);
xml.send(null);
    
    
}


function validaRevista(ano){
var xml;
var Campomes = document.getElementById('meses');
var indice = Campomes.selectedIndex;
var mes = Campomes.options[indice].text;


if(window.XMLHttpRequest){
    xml = new XMLHttpRequest;
}
else{
    try{
        xml = new ActiveXObject('MSXML2.XMLHTTP.3.0');
    }
    catch(e){
        xml = new  ActiveXobject("Microsoft.XMLHTTP");  
    }
}

xml.onreadystatechange=function(){
    
    if(xml.readyState==1){
        document.getElementById('resultado').innerHTML = "Aguarde, Carregando..";
    }
    else if(xml.readyState==4 && xml.status==200){
        document.getElementById('resultado').innerHTML = xml.responseText;
        
        }
    }    




xml.open("GET","layout/buscaRevista.php?ano="+ano+"&mes="+mes);
xml.send(null);
    
       
    
    
}