function ocultar(x)
{
  document.getElementById(x).style.display='none';
}

function mostrar(x)
{
  document.getElementById(x).style.display='block';
}

function show(obj)
{
  var el=document.getElementById(obj);
  if(el.style.display!='')
  {
    el.style.display='';
  }
  else if(el.style.display!='none')
  {
    el.style.display='none';
  }
}

function esconde(obj)
{
  var el=document.getElementById(obj);
  if(el.style.display!='')
  {
    el.style.display='';
  }
  else if(el.style.display!='none')
  {
    el.style.display='none';
  }
}

function show_foto(foto,obj)
{
  if((document.getElementById('galeria_foto'))&&(document.getElementById('galeria_foto_img'))&&(foto))
  {
    document.getElementById('galeria_foto_img').src='../imagens/galeria/grandes/'+foto;
    document.getElementById('galeria_foto_img').alt=obj.title;
    document.getElementById('galeria_foto_img').title=obj.title;
    document.getElementById('galeria_foto_legenda').innerHTML=obj.title;
  }
  else
  {
    alert('Errado');
  }
}

function next_foto()
{
  var atual=document.getElementById('galeria_foto_img').title;
  var proxima;
  for(c=0;c<((document.getElementById('thumbnails').getElementsByTagName('img').length)-1);c++)
  {
    if(atual==document.getElementById('thumbnails').getElementsByTagName('img')[c].title)
    {
      proxima=document.getElementById('thumbnails').getElementsByTagName('img')[c+1].title;
      proximaurl=document.getElementById('thumbnails').getElementsByTagName('img')[c+1].name;
    }
  }
  if(proxima==undefined)
  {
    if(document.getElementById('btn_next_page').href!=undefined)
    {
      window.location.href=document.getElementById('btn_next_page').href;
    }
    //document.getElementById('btn_next_page').click();
  }
  else
  {
    document.getElementById('galeria_foto_img').src='../imagens/galeria/grandes/'+proximaurl;
    document.getElementById('galeria_foto_img').alt=proxima;
    document.getElementById('galeria_foto_img').title=proxima;
    document.getElementById('galeria_foto_legenda').innerHTML=proxima;
  }
}
function prev_foto()
{
  var atual=document.getElementById('galeria_foto_img').title;
  var anterior;
  for(c=0;c<((document.getElementById('thumbnails').getElementsByTagName('img').length));c++)
  {
    if((atual==document.getElementById('thumbnails').getElementsByTagName('img')[c].title)&&(c!=0))
    {
      anterior=document.getElementById('thumbnails').getElementsByTagName('img')[c-1].title;
      anteriorurl=document.getElementById('thumbnails').getElementsByTagName('img')[c-1].name;
    }
  }
  if(anterior==undefined)
  { 
    if(document.getElementById('btn_prev_page').href!=undefined)
    {
      window.location.href=document.getElementById('btn_prev_page').href;
    }
    //document.getElementById('btn_prev_page').click();
  }
  else
  {
    document.getElementById('galeria_foto_img').src='../imagens/galeria/grandes/'+anteriorurl;
    document.getElementById('galeria_foto_img').alt=anterior;
    document.getElementById('galeria_foto_img').title=anterior;
    document.getElementById('galeria_foto_legenda').innerHTML=anterior;
  }
}