//current_txtsize_image
function chgImg(name, url) {
	document.images["large"].src = "image/tsize_b.gif";
	document.images["middle"].src ="image/tsize_m.gif";
	document.images["small"].src = "image/tsize_s.gif";
	document.images[name].src = url; 
}

//txtsize_css
function replace_css(id,url){
  if(!document.getElementById) return false;
  var element = document.getElementById(id);
  if(!element || !element.cloneNode) return false;
  var new_node = element.cloneNode(true);
  new_node.href = url;
  element.parentNode.replaceChild(new_node,element);
  return true;
}