scrollDown: Scrolls the page down to show an element if it is not currently in the viewport. Requires jQuery.

scrolldown.js

      function scrollDown( options ) {
        var settings, winHeight, elementTop;

        // override settings by passing in the options object
        settings = $.extend({
          'offset': 70,
          'selector': 'footer',
          'speed': 'fast'
        }, options);

        winHeight = $(window).scrollTop() + $(window).height() + settings.offset;
        elementTop = $(settings.selector).offset().top + $(settings.selector).height();

        // scroll into view, if element is out of view
        if ( elementTop > winHeight ) {
          $('html, body').animate({
            scrollTop: elementTop - settings.offset
          }, settings.speed );
        }
      }