var map_picture = "http://images.ontwikkel.nl/tracker/iss_map.jpg";

// Delay 15 seconds (1min = 600000 ms)
var delay = 15000;
   
function setNewImageAgain1(){
    setNewImage1();
}

function setNewImage1(){
    iss_map = map_picture + "?" + Math.random();
    if (iss_map && (iss_map.complete || iss_map.complete==null)) {
        document.map_image.src = iss_map;
    }
    setTimeout("setNewImageAgain1()", delay);
    return;
}
setNewImage1();