function slideSwitch() {
			    var $active = $('#mainVisual img.active');
			    if ( $active.length == 0 ) $active = $('#mainVisual img:last');
			    var $next =  $active.next().length ? $active.next() : $('#mainVisual img:first');
			    $active.addClass('last-active');
			    $next.css({opacity: 0.0})
			        .addClass('active')
			        .animate({opacity: 1.0}, 2000, function() {
			            $active.removeClass('active last-active');
					});
			}
			$(function() {
			    setInterval( "slideSwitch()", 3000 );
			});