Untitled

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Srict//EN"
"http://www.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> Kangaroo </title>
<script type="text/javascript">
<!-- HIDE FROM INCOMPATIBLE BROWsERS
var up_or_down;
var begin;
position = 0;
horizontal = new Array(10);
horizontal[0]=10;
horizontal[1]=60;
horizontal[2]=110;
horizontal[3]=160;
horizontal[4]=210;
horizontal[5]=260;
horizontal[6]=310;
horizontal[7]=360;
horizontal[8]=410;
horizontal[9]=460;
function hop() {
        if (up_or_down == "up") {
                document.getElementById("kangaroo").style.top = 60 + "px" ;
                up_or_down = "down";
        }
        else {
                document.getElementById("kangaroo").style.top = 120 + "px" ;
                up_or_down = "up";
        }
        document.getElementById("kangaroo").style.left = horizontal[position] +
"px";