function hideImgLoading() {
  if (document.getElementById) {  // DOM3 = IE5, NS6
    document.getElementById('span_img_loading').style.visibility = 'hidden';
  }
  else {
    if (document.layers) {  // Netscape 4
      document.span_img_loading.visibility = 'hidden';
    }
    else {  // IE 4
      document.all.span_img_loading.style.visibility = 'hidden';
    }
  }
}

function unFrame() { 
  if (self!= top) 
  top.location.href = self.location.href; 
}