function EstaVacio(dato)
{
	for (var i=0; i<dato.length; i++) {
		if (dato.substring(i, i+1) != " ") {
			return(false);
		}
	}
	return(true);
}

function ValidaRUT(rut, dv)
{
  if ( rut == "" || dv == "" )
      return false;
  if (isNaN(rut )) 
	 return false;
  largo = rut.length;
  var dvr = '0';
  suma = 0;
  mul  = 2;
  
  for (i= largo -1 ; i >= 0; i--)
  {
    suma = suma + rut.charAt(i) * mul;
    if (mul == 7)
      mul = 2;
    else    
      mul++;
  }
  res = suma % 11
  
  if (res==1)
    dvr = 'k'
  else if (res==0)
    dvr = '0'
  else
  {
    dvi = 11-res
    dvr = dvi + ""
  }
  
  if ( dvr != dv.toLowerCase() )
    return false;
  return true;
}

function validarEmail(valor) {
  if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(valor)){
    return (true)
  } else {
    return (false);
  }
}