$("#download-image").on('click', function() {
    // For IE 10 & 11
    if(typeof window.navigator.msSaveBlob === 'function')
        window.navigator.msSaveBlob(new Blob( [__CANVAS.msToBlob()], {type: 'image/png'} ), 'page.png');
    else
        $(this).attr('href', __CANVAS.toDataURL()).attr('download', 'page.png');
});