Vertical scrolling text javascript

COURTESY OF http://www.bl0g.co.uk/vertical-scrolling-text-news-ticker-in-javascript-dhtml.html

<style type="text/css">
    body {
    color: #333333;
    xbackground-color: #000000;
    text-align:left;
    font-family:"Lucida Sans Unicode", "Lucida Grande", sans-serif;
    }

  #scrollBox {
   /* The box displaying the scrolling content */
   position: absolute;
   top: 5%;
   left: 5%;
   width: 90%;
   height: 90%;
   border: 0px solid #aaaaaa;
   overflow: hidden;
 }
  #scrollTxt {
  /* the box that actually contains our content */
   font: normal 12px sans-serif;
   position: relative;
   top: 10%;
  }
</style>
</head>
<body>

<div id="scrollBox" class="scrollBox">
<div id="scrollTxt" class="scrollTxt">
<h1>Header</h1>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque vitae
enim eu mauris rhoncus malesuada. Suspendisse et tellus diam, et ullamcorper
nisl. In nec nibh dolor, et auctor nibh. Duis pretium faucibus bibendum.
Suspendisse eget leo in eros faucibus consequat a id nisl. Quisque cursus
lacinia consectetur. Nam mattis sagittis diam, ac posuere risus porttitor
sed.
<h2>Header 2:</h2>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque vitae
enim eu mauris rhoncus malesuada. Suspendisse et tellus diam, et ullamcorper
nisl. In nec nibh dolor, et auctor nibh. Duis pretium faucibus bibendum.
Suspendisse eget leo in eros faucibus consequat a id nisl. Quisque cursus
lacinia consectetur. Nam mattis sagittis diam, ac posuere risus porttitor sed.
<p>Paragraf:</p>
Class aptent taciti sociosqu ad litora torquent per conubia nostra, per
inceptos himenaeos. Phasellus tincidunt eros at risus consectetur feugiat.
Etiam id erat vel lectus pharetra posuere. Maecenas rhoncus est vel lectus
posuere dictum.
</div>
</div>
</body>

<script type="text/javascript">
 var scrollSpeed =1;   // number of pixels to change every frame
 var scrollDepth = 700; // height of your display box
 var scrollHeight=0;   // this will hold the height of your content
 var scrollDelay=10;  // delay between movements.
//document.getElementById('scrollBox').style.height

 var scrollPos=scrollDepth; // current scroll position
 var scrollMov=scrollSpeed; // for stop&start of scroll

 function doScroll() {
  if(scrollHeight==0) { getHeight(); }
  scrollPos-=scrollMov;
  if(scrollPos< (0-scrollHeight)) { scrollPos=scrollDepth; }
  document.getElementById('scrollTxt').style.top=scrollPos+'px';
  setTimeout('doScroll();', scrollDelay);
 }

 function getHeight() {
  scrollHeight=document.getElementById('scrollTxt').offsetHeight;
 }

 function scrMove() { scrollMov=scrollSpeed; }
 function scrStop() { scrollMov=0; }
doScroll();

//var t=setTimeout("window.location.href=window.location.href",20000); // A quick way to test new html is by timing out a reload. Saved me countless station reboots.
</script>