function chageSwitch(div_id,content_id){
  //$(div_id).visualEffect('blind_up',{duration:1.5});
  $(div_id).hide();
  $(div_id).innerHTML = $(content_id).innerHTML;
  $(div_id).visualEffect('slide_down',{duration:1.5});
}

function _IE() {
	return (navigator.userAgent.indexOf('MSIE') ==  -1)? false : true;
}

function switchImagePNG(obj){
  is_IE = _IE();
  if(is_IE){
    obj.style.visibility = 'hidden';
    obj.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=0)';
  }
  elemParent = obj.parentNode;
  elemParent.style.width = '700px';
  elemParent.style.height = '340px';
  elemParent.style.display = 'inline-block';
  elemParent.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="images/universe.png")';
}