// Tracker Amateur Satellites -
var picture = "http://images.ontwikkel.nl/tracker/amsat_PC1L.png";

// Delay 15 seconds (1min = 600000 ms)
var delay = 60000;

function setNewImageAgain1(){
    setNewImage1();
}

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