Zepto.FitText.js

zepto.fittext.js

/*global jQuery */
/*!
 * FitText.js 1.1
 *
 * Copyright 2011, Dave Rupert http://daverupert.com
 * Released under the WTFPL license
 * http://sam.zoy.org/wtfpl/
 *
 * Date: Thu May 05 14:23:00 2011 -0600
 */

(function ($) {

    $.fn.fitText = function (kompressor, options) {

        // Setup options
        var compressor = kompressor || 1,
            settings = $.extend({
                'minFontSize': Number.NEGATIVE_INFINITY,
                'maxFontSize': Number.POSITIVE_INFINITY
            }, options);

        return this.each(function () {

            // Store the object
            var $this = $(this);

            // Resizer() resizes items based on the object width divided by the compressor * 10
            var resizer = function () {
                $this.css('font-size', Math.max(Math.min($this.width() / (compressor * 10), parseFloat(settings.maxFontSize)), parseFloat(settings.minFontSize)));
            };

            // Call once to set.
            resizer();

            // Call on resize. Opera debounces their resize by default. 
            $(window).on('resize', resizer);

        });

    };

})(Zepto);

how to use?
http://jsfiddle.net/aL26a/