jQuery Plugin for Spin.js (with overlay)

jquery.spin.js

/*

You can now create a spinner using any of the variants below:

$("#el").spin(); // Produces default Spinner using the text color of #el.
$("#el").spin("small"); // Produces a 'small' Spinner using the text color of #el.
$("#el").spin("large", "white"); // Produces a 'large' Spinner in white (or any valid CSS color).
$("#el").spin({ ... }); // Produces a Spinner using your custom settings.

$("#el").spin(false); // Kills the spinner.

*/
(function($) {
	$.fn.spin = function(opts, color) {
		var presets = {
			"tiny": { lines: 9, length: 2, width: 2, radius: 4, trail: 70, speed: 1 },
			"small": { lines: 8, length: 4, width: 3, radius: 5 },
			"large": { lines: 10, length: 8, width: 4, radius: 8 }
		};

        var overlay = $('<div class="overlay" style="position: absolute; background: rgba(0,0,0,0.25); z-index: 10000;"></div>');

		if (Spinner) {
			return this.each(function() {
				var $this = $(this),
					data = $this.data();

				if (data.spinner) {
					data.spinner.stop();
					delete data.spinner;
				}
				if (opts !== false) {
					if (typeof opts === "string") {
						if (opts in presets) {
							opts = presets[opts];
						} else {
							opts = presets['tiny'];
						}
						if (color) {
							opts.color = color;
						}
					}
					else {
						opts = presets['tiny'];
					}

                    overlay.css({

                        width: $this.innerWidth(),
                        height: $this.innerHeight(),
                        left: 0,
                        top: 0
                    });

                    overlay.appendTo(this);

					data.spinner = new Spinner($.extend({color: $this.css('color')}, opts)).spin(this);
				}
                else{

                    $this.find('.overlay').remove();
                }

			});
		} else {
			throw "Spinner class not available.";
		}
	};
})(jQuery);