//切替対象要素ID名
var fh_target_name = "tmp_flashcontent_top";
//HTML版ソース格納
var ver_html = document.getElementById(fh_target_name).innerHTML;

var so = new SWFObject("shared/flash/top/top.swf", "top", "570", "210", "7", "#ffffff");
so.addVariable("file_dir", "shared/flash/top/images/");
so.write(fh_target_name);