<!--
  function adicional() {
    var i=0, val=0;
    var obj=null;
    var f = document.forms[0];
    var valor = parseFloat(f.prdpreco.value);

    for (; i<f.elements.length; i++) {
      obj = f.elements[i];
      if (obj.name.indexOf("carac") > -1) {
        id = obj.options[obj.selectedIndex].value;
        if (id!="")
          val = val + parseFloat(f["vc"+id].value);
      }
    }
    if (val > 0) {
      var sp = document.getElementById("sp_preco");
      sp.innerText = "R$ " + formatCurrency(valor + val); 
    }
  }

  function aviso_disponibilidade(id) {
    var width = 640;
    var height = 480;
    var left = ((screen.width - width) / 2);
    var top = (((screen.height - height) / 2) - 50);

    window.open("disponibilidade.asp?produto=" + id, "Aviso",
                "left=" + left + ", top=" + top + ", width=" + width + ", height=" + 
                height + ", directories=no, location=no, menubar=no, personalbar=no, " + 
                "resizable=no, scrollbars=no, status=no, toolbar=no, titlebar=yes");
  }

  function opinar(id) {
    var width = 400;
    var height = 450;
    var left = ((screen.width - width) / 2);
    var top = (((screen.height - height) / 2) - 50);

    window.open("opinar.asp?produto=" + id, "Opinar", 
                "left=" + left + ", top=" + top + ", width=" + width + ", height=" + 
                height + ", directories=no, location=no, menubar=no, personalbar=no, " + 
                "resizable=no, scrollbars=no, status=no, toolbar=no, titlebar=yes");
  }

  function recomendar(id) {
    var width = 400;
    var height = 400;
    var left = ((screen.width - width) / 2);
    var top = (((screen.height - height) / 2) - 50);

    window.open("recomendar.asp?produto=" + id, "Recomendar", 
                "left=" + left + ", top=" + top + ", width=" + width + ", height=" + 
                height + ", directories=no, location=no, menubar=no, personalbar=no, " + 
                "resizable=no, scrollbars=no, status=no, toolbar=no, titlebar=yes");
  }

  //abre a tela de detalhes do produto
  function detalhes(id, exist) {
    if (exist == 0)
      return;

    var width = 350;
    var height = 400;
    var left = ((screen.width - width) / 2);
    var top = (((screen.height - height) / 2) - 50);

    window.open("detalhe.asp?produto=" + id, "Detalhes", 
                "left=" + left + ", top=" + top + ", width=" + width + ", height=" + 
                height + ", directories=no, location=no, menubar=no, personalbar=no, " + 
                "resizable=no, scrollbars=no, status=no, toolbar=no, titlebar=yes");
  }

  function comprar() {
    var i=0;
    var max=0;
    var str = "";
    var controle = null;
    var f = document.forms[0];

    var produto = f.id.value;
    if (f.elements.length)
      max = f.elements.length;
    for (; i<max; i++) {
      controle = f.elements[i];
      if (controle.name.indexOf("carac") >= 0) {
        if (controle.selectedIndex<=0) {
          alert("Por favor, selecione as carcterísticas do produto!");
          controle.focus();
          return;
        }
        else {
          str = str + "&carac=" + controle.value;        
        }
      }
    }    
    window.location.href = "comprar.asp?produto=" + produto + str
  }
//-->