Edit in JSFiddle

var img1 = "http://3.bp.blogspot.com/_mDCUlcb7a3s/S-G-trqRDmI/AAAAAAAAABY/wktQjhTLCJM/s1600/carolina.jpg",
    img2 = "http://www.decoracion-de-interiores.net/wp-content/uploads/2011/07/africano.jpg",
    tem = 1500;

$("#test1")
    .prop("src", img1)
    .animate(
        {left: 400}, 
        tem,
        "linear",
        function(){
            $(this)
                .prop("src", img2)
                .animate({left: 384}, tem);     
        }
    ); 

<img id = "test1" />

#test1{
    position: relative;
}