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

var so = new SWFObject("../shared/flash/eco/swf/eco.swf", "eco", "100%", "120", "8", "#ffffff");
  so.write(fh_target_name);