I have a JS to make a smooth scroll from the bottom of the page to the top with this and it works:

<script>



     $(a[href='#top']).click(function() {

     $(html, body).animate({ scrollTop: 0 }, slow);

     return true;

  });

</script>

But now I want to make a smooth scroll from the top to the bottom, I tried it with this:

 <script>



     $(a[href='#footer']).click(function() {

     $(html, body).animate({ scrollToBottom: 0 }, slow);

     return true;

  });

</script>`

It doesn't work, it's not a smooth scroll. Does anyone know what's wrong with this?