function addShadow(element) {
   $(element).css({
      // CSS 3
      'box-shadow': '10px 10px 20px rgba(0, 0, 0, 0.3)',

      // proprietary styles for older versions of firefox and safari
      '-moz-box-shadow': '10px 10px 20px rgba(0, 0, 0, 0.3)',
      '-webkit-box-shadow': '10px 10px 20px rgba(0, 0, 0, 0.3)'
   });
}