仿微博滚动条接近底部时加载

结合上一篇中的js函数，简单仿照企鹅微博上当滚动条接近网页底部时，微博内容的加载。

本文地址:http://www.cnblogs.com/vnii/archive/2012/02/08/2342884.html

代码：

 //整个网页滚动时
  webPage.addEvent(window, "scroll", function () {
      var rb = webPage.rightBottom();//当前页面区域右下角距网页左上角的位置差，见上一篇
      if (rb.y + 50 >= webPage.size().height) {
          document.body.appendChild(webPage.$div({ "width": 180, "height": 100, "color": "#970568", "x": 10, "y": 10, "z": 999, "styleText": "border:1px solid" }));
      }
  });
  
 //某个div内
  var tObj=document.getElementById("t");
  webPage.addEvent(tObj, "scroll", function () {
      var r = parseInt(tObj.scrollTop) + parseInt(tObj.style.height);
      if (r + 20 >= tObj.scrollHeight) {
          tObj.appendChild(webPage.$div({ "width": 10, "height": 10, "x": 10, "y": 10, "z": 999, styleText: "border:1px solid" }));
      }
  });