function slideSwitch() {
    var $active = $('#slideshow IMG.active');
    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');
    // 
    var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');
    // 
    
    // var $sibs  = $active.siblings();
    // var rndNum = Math.floor(Math.random() * $sibs.length );
    // var $next  = $( $sibs[ rndNum ] );

    $active.addClass('last-active');
    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}
$(function() {
    setInterval( "slideSwitch()", 2000 );
});



(function($) {
 $(document).ready(function() {  
  //
  function leftMove() {
   var docHeight = $(document).innerHeight();
   var container = $('div.wrap_default');
   var init_top = container.offset().top;
   var containerTop = container.innerHeight() + init_top;
   var scrollTop;
   $(window).scroll(function() {
    scrollTop = $(window).scrollTop();
    if(docHeight <= containerTop + scrollTop) scrollTop = docHeight - containerTop;
    container.css({marginTop: scrollTop});
   });
  }
  //$(window).load(leftMove);
  
  // 
  $('#scroll_top').click(function(e) {
   $('body, html').stop().animate({scrollTop:0}, 500);
   e.preventDefault();
  });
  var scrollTimer = null;  
  $(window).scroll(function(e) {
   clearTimeout(scrollTimer);
   scrollTimer = setTimeout(function() {
    var scrollTop = $(window).scrollTop();
    if(scrollTop > 100) $('#scroll_top').fadeIn(600);
    else $('#scroll_top').fadeOut(200);
   }, 100);
  });
 });
}(jQuery));