<!--
	function valida_envia(){

	//name validation, just check for the field isn't empty
	if (document.fvalida.username.value.length==0){
	   alert("You should add your PIN")
	   document.fvalida.username.focus()
	   return false;
	}
   
	//password validation, just check for the field isn't empty
	if (document.fvalida.password.value.length==0){
	   alert("You should add your password")
	   document.fvalida.password.focus()
	   return false;
	}

	//document.fvalida.submit();
	return true;
}
// -->a