[Solved] javascript spinner for grails

Pure javascript — not even any images:

document.getElementById("button").onclick = function() {
    var spinner = document.getElementById("spinner_container")​​​​;
    spinner.anim_mode = 0;
    var animation = ["|", "https://stackoverflow.com/", "–", "\\"]
    var spin = function() {
        spinner.anim_mode = (spinner.anim_mode + 1) % animation.length;
        spinner.innerHTML = animation[spinner.anim_mode];
    };
    spin();
    setInterval(spin, 100);
};​

http://jsfiddle.net/dGL8X/