var canvas = document.getElementById('error'),
    ctx = canvas.getContext('2d');

function noise(ctx) {
    
    var w = ctx.canvas.width,
        h = ctx.canvas.height,
        idata = ctx.createImageData(w, h),
        buffer32 = new Uint32Array(idata.data.buffer),
        len = buffer32.length,
        i = 0;

    for(; i < len;)
        buffer32[i++] = ((255 * Math.random())|0) << 24;
    
    ctx.putImageData(idata, 0, 0);
}

var toggle = true;


//save a reference so that this can be canceled!!!
(function loop() {
    noise(ctx);
    requestAnimationFrame(loop);
})();