Thanks Jörn!! It works! But I continue with a problem because the link Submit has to validate that only input1 of the form is not empty. And the submit button validates that the three inputs are no empty. So I think that I will have two validations for the same form. How can I do that?
I have a form with 3 inputs: <form id="form1" method="post"> <input type="text" id="input1" > <input type="text" id="input2" > <input type="text" id="input3" > <input type="submit" value="Submit button" name="Submit" > <a id="submit" href="#">Submit link</a> </form> Thanks again! Sole