gistfile1.js

// detect support for css3 border radius

var BORDER_RADIUS_SUPPORT = (function(document) {
  var docEl = document.documentElement, s = docEl && docEl.style;
  return (s
    ? typeof s.borderRadius == 'string'
      || typeof s.KhtmlBorderRadius == 'string'
      || typeof s.MozBorderRadius == 'string'
      || typeof s.WebkitBorderRadius == 'string'
    : null
  );
})(this.document);