Simple jQuery Plugin that auto resizes text to fill a specific sized div (great for responsive slideshows that utilize large banner text with variable lengths), derived from https://gist.github.com/iam4x/5015270

autoSizr.js

$.fn.autoSizr = function () {
  var el, elements, _i, _len, _results;
  elements = $(this);
  if (elements.length < 0) {
    return;
  }
  _results = [];
  for (_i = 0, _len = elements.length; _i < _len; _i++) {
    el = elements[_i];
    _results.push((function(el) {
      var resizeText, _results1;
      resizeText = function() {
        var elNewFontSize;
        elNewFontSize = (parseInt($(el).css('font-size').slice(0, -2)) - 1) + 'px';
        return $(el).css('font-size', elNewFontSize);
      };
      _results1 = [];
      while (el.scrollHeight > el.offsetHeight) {
        _results1.push(resizeText());
      }
      return _results1;
    })(el));
  }
  return $(this); 
};