jquery page top

$(document).ready(function() {

  $('a[href*=#]').click(function() {

   if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')

       && location.hostname == this.hostname) {

     var $target = $(this.hash);

     $target = $target.length && $target || $('[name=' + this.hash.slice(1) +']');

     if ($target.length) {

       var targetOffset = $target.offset().top;

       $('html,body').animate( { scrollTop: targetOffset }, 900);

       return false;

     }

   }

  });

});

 

// how to use

// place this where you want to scroll to

<a name="top"></a>

// the link

<a href="#top">go to top</a>