function slideSwitch(switchSpeed) {
var $active = $('#slidr A.active');

if ( $active.length == 0 ) $active = $('#slidr A:last');

var $next = $active.next('A').length ? $active.next('A')
: $('#slidr A:first');

$active.addClass('last-active');


 $next.css({opacity: 0.0})
 .addClass('active')
 .animate({opacity: 1.0}, switchSpeed, function() {
 $active.removeClass('active last-active');
 });
}

$(function() {
 setInterval ( "slideSwitch(1000)", 5000 );
});