Smooth Scroolling!

Smooth Scroolling!

Hi People! i can't make my smooth scroll to work right :c
idk why!

Here´s the html code: 

 <li><a href="#TextoContacto" rel=""  id="anchor1" class="anchorLink">Contacto</a></li>

and js:

$('li.a').click(function(){
    $('html, body').animate({
        scrollTop: $( $(this).attr('href') ).offset().top
    }, 500);
    return false;
});


i'll apreciate your help <3