function vdata(wobj, wparam)
{
     var wdata = wobj.value;
     var wdatanew = "";
     var wletra = "";
     var wtoday = new Date();
     var wanoatu = wtoday.getFullYear();
     var wmesatu = wtoday.getMonth() + 1;
     var wdiaatu = wtoday.getDate();
     wdiaatu = "00" + wdiaatu
     wdiaatu = wdiaatu.substring(wdiaatu.length - 2,wdiaatu.length)
     wmesatu = "00" + wmesatu
     wmesatu = wmesatu.substring(wmesatu.length - 2,wmesatu.length)

     if (wdata.toUpperCase() == "H")
     {
          wdata = wdiaatu + wmesatu + wanoatu
     }
     
     for (x = 0; x < wdata.length; x++)
     {
          wletra = wdata.substring(x,x + 1);
          if (!isNaN(parseFloat(wletra)))
          {
               wdatanew = wdatanew + wletra;
          }
     }

     wdata = wdatanew;
     wdatanew = "";
    
     if (wdata.length == 2)
     {
          wdata = wdata + wmesatu
     }
     if (wdata.length == 4)
     {
          wdata = wdata + wanoatu
     }
     if (wdata.length = 6 || wdata.length == 8)
     {
          var wdia = wdata.substring(0,2);
          var wmes = wdata.substring(2,4);
          if (wdata.length == 6)
          {
               var wano = wdata.substring(4,6);
               wanoatu = wanoatu + ""
               wano = wanoatu.substring(0,2) + wano;
          }
          else
          {
               var wano = wdata.substring(4,8);
          }
          var wdiamax = "312831303130313130313031";
          var wanomax = "3000";
          var wmesmax = "12";
          if (eval(wano) >= 1900 && eval(wano) <= eval(wanomax))
          {
               if (eval(wmes) >= 1 && eval(wmes) <= eval(wmesmax))
               {
                    var wini = eval(wmes) * 2 - 2;
                    var wfin = eval(wmes) * 2;
                    if (eval(wdia) >= 1 && eval(wdia) <= eval(wdiamax.substring(wini,wfin)))
                    {
                         wdatanew = "1";
                    } 
                    else
                    {
                         if (parseInt(eval(wano)/4) - eval(wano)/4 == 0 && wdia == "29" && wmes == "02")
                         {
                              wdatanew = "1";
                         }
                    }
               }
          }
     }
     if (wdatanew == "1")
     {
          wdia = "0" + wdia;
          wdia = wdia.substring(wdia.length, wdia.length - 2);
          wmes = "0" + wmes;
          wmes = wmes.substring(wmes.length, wmes.length - 2);
          wdatanew = wdia + "/" + wmes + "/" + wano;
     }
     else
     {
          wdatanew = "";
     }
     wobj.value = wdatanew;
}


function clearTxt(id){
    var txt = document.getElementById('ctl00_ContentPlaceHolder1_CtrlAreaRestrita1_' + id);
    
    if(txt.value=='Email'){
        txt.value = '';
    }
    else if(txt.value==''){
        txt.value = 'Email';
    }
}