// pagetop scroll

function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}



// news include

function include(filename, afterfunc) {

  include.seq = (include.seq)? include.seq + 1: 1;

  var id = new Date().getTime() + "-" + include.seq;
  var inc = document.createElement("iframe");

  inc.id = "inc-" + id;
  inc.src = filename;
  inc.style.display = "none";
  document.write("<span id=\"" + id + "\"></span>");
    
  var incfunc = function() {
    
    var s = (function() {
      var suffix = (n = filename.lastIndexOf(".")) >= 0 ? filename.substring(n): "default";
      if (suffix == ".html") return inc.contentWindow.document.body.innerHTML;
      if (suffix == ".txt") return inc.contentWindow.document.body.firstChild.innerHTML;
      if (suffix == "default") return inc.contentWindow.document.body.innerHTML;
    })();

    var span = document.getElementById(id);

    var insertBeforeHTML = function(htmlStr, refNode) {
      if (document.createRange) {
        var range = document.createRange();
        range.setStartBefore(refNode);
        refNode.parentNode.insertBefore(range.createContextualFragment(htmlStr), refNode);
      } else {
        refNode.insertAdjacentHTML('BeforeBegin', htmlStr);
      }
    };

    insertBeforeHTML(s.split("&gt;").join(">").split("&lt;").join("<"), span);
    document.body.removeChild(inc);
    span.parentNode.removeChild(span);
    if (afterfunc) afterfunc();
  };

  if (window.attachEvent) {
    window.attachEvent('onload', 
      function() {
        document.body.appendChild(inc); 
        inc.onreadystatechange = function() { if (this.readyState == "complete") incfunc(); };
      });
  }
  else {
    document.body.appendChild(inc);
    inc.onload = incfunc;
  }
}