var slideshow_array=[
    {src: 'images/img1.jpg'},
    {src: 'images/img2.jpg'},
    {src: 'images/img3.jpg'},
    {src: 'images/img2.jpg'}
//    {src: 'images/img1.png'},
//    {src: 'images/img2.png'},
//    {src: 'images/img3.png'}
];

$(document).ready(function(){
    $(function() {
            $(function() {
              $('#slideshow').crossSlide({
                sleep: 3, //in sec
                fade: 1   //in sec
              }, slideshow_array);
            });
    });
});