function submainTopMenuOn(tindex) {
  var timg;
  for (i = 1; i<=6; i++){
    if (i == tindex ) {
      timg = "/eng/images/common/btn_nav0" + i + "_o.gif";
    }else{
      timg = "/eng/images/common/btn_nav0" + i + ".gif";
    }
    $("subtopMenu0"+i).src = timg;
  }
}