function freecap_new() {
    // loads new freeCap image
    if(document.getElementById) {
        // extract image name from image source (i.e. cut off ?randomness)
        var src = document.getElementById("freecap").src;
        src = src.substring(0,src.lastIndexOf(".")+4);
        // add ?(random) to prevent browser/isp caching
        document.getElementById("freecap").src = src+"?"+Math.round(Math.random()*100000);
    } else {
        alert("Cannot load validation text.");
    }
}