window.onload=function(){
  //init();
  var hgt = document.getElementById('page1').offsetHeight;
  //alert(hgt);
  if (hgt < 109)
  {
    document.getElementById('up').style.visibility='hidden';
    document.getElementById('down').style.visibility='hidden';
    document.getElementById('page1').style.visibility='visible';
  }
  else
  {
      document.getElementById('up').style.visibility='visible';
      document.getElementById('down').style.visibility='visible';
      document.getElementById('page1').style.visibility='hidden';
  }
  init();
  ScrollPageIn();

  }

  function hideStatus()
  {
  e.style.display = 'none';
  }
  function init()
  {
  e = document.getElementById('infor');
  if(e) setTimeout('hideStatus()',5000);

  }