function chg_vid(video){
  var sa = new SWFObject('../swf/player.swf','ply', '480', '320','9');
  sa.addParam("allowfullscreen","true");
  sa.addParam("allowscriptaccess","always");
  sa.addParam("seamlesstabbing","true");
  sa.addParam("flashvars","file=../video_lsq/" + video + "&autostart=false" );
  sa.write('video1');
}