function flash(str){
  document.write ("<object id=\"intro\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0\" height=\"210\" width=\"920\" classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\">");
  document.write ("<param name=\"flashvars\" value=\"20638\"/>");
  document.write ("<param name=\"movie\" value=\"img/" + str + ".swf\"/>");
  document.write ("<param name=\"src\" value=\"img/" + str + ".swf\"/>");
  document.write ("<param name=\"menu\" value=\"false\"/>");
  document.write ("<param name=\"play\" value=\"-1\"/>");
  document.write ("<param name=\"loop\" value=\"-1\"/>");
  document.write ("<param name=\"quality\" value=\"high\"/>");
  document.write ("<embed src=\"img/" + str + ".swf\" quality=\"high\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" type=\"application/x-shockwave-flash\" width=\"920\" height=\"210\"></embed>");
  document.write ("</object>");
}