<!--
  function getWindowHeight()
  {
    var windowHeight = 0;
    if (window.innerHeight) 
    {
      windowHeight = window.innerHeight;  
    }
    else if (document.documentElement.clientHeight)
    {
      windowHeight = document.documentElement.clientHeight;
    }
    else if (document.body.clientHeight)
    {
      windowHeight = document.body.clientHeight; 
    }
    return windowHeight;
  }
//-->