function slideSwitch() {
	var $active = $('#cnt_slide img.active');
	if ( $active.length == 0 ) $active = $('#cnt_slide img:last');
	var $next = $active.next().length ? $active.next()
	: $('#cnt_slide img:first');
	$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()", 5000 );
});