http://blog.darkhax.com/2009/11/13/swfobject-meet-jquery

jquery-swfobject.js

(function($) {
  $.fn.swfembed = function(movie, width, height) {
    this.each(function() {
      scale = 600 / width;
      w = '600px';
      h = (height * scale) + 'px';
      swfobject.embedSWF(movie, this.id, w, h, '9.0.124', '/swf/expressInstall.swf', null, { wmode: 'opaque', allowFullscreen: true });
    });
  }
})(jQuery);

$(document).ready(function() {
  $('.swfembed').each(function() {
    t = $(this);
    $(this).swfembed(t.attr('movie'), parseInt(t.attr('mwidth')), parseInt(t.attr('mheight')));
  });
});