$(function() {
    $('#header').crossSlide({
        sleep: 5,
        fade: 2
    }, [
    {
        src: 'images/header1.jpg'
    },
{
        src: 'images/header2.jpg'
    },
{
        src: 'images/header3.jpg'
    },
{
        src: 'images/header4.jpg'
    }
    ])
});