<!DOCTYPE HTML> <html> <body> <div class="scrollTop" style="width:400px; height:400px; margin-top:10.5px; font-size:21px; white-space:pre; overflow:hidden;">Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty Hello Kitty <div style="height:800px;"></div> </div> <script src="scrolling.js"></script> </body> </html>