function buildContent (blog) {
  if (!blog || !blog.items) return;
  var container=document.getElementById("reading_vf");
  var code="";
  for (var i = 0; i < blog.items.length; i++) {
    var item = blog.items[i];
	var annot=(item.annotations.length>0)?item.annotations[0].content:"";
    code=code+"<div class='googlereader'><a class='title' href='"+item.alternate.href+"' target='_blank'>"+item.title+"</a><div class='meta'>'"+annot+"'</div></div>";
  }
  container.innerHTML=code;
}