function slideSwitch() {
  var $active = $('#slider li.active').addClass('active');
  if ( $active.length == 0 ) $active = $('#slider li.slider-content:last');
  var $next = $active.next().length ? $active.next() : $('#slider ul.slider-container li.slider-content:first');
  $active.hide().css({opacity: 0.0}).removeClass('active last-active');
  $next.addClass('active').show().css({opacity: 0.0}).animate({opacity: 1.0}, 1000);
}
$(function() {
  var $list = $('#slider li');
  if ( $list.length > 1 ) setInterval( "slideSwitch()", 5000 );
});
$(document).ready(function(){
  slideSwitch();
});