Code
<html>
<head>
<title>Подпрыгивающее слово или фраза</title>
<script language="JavaScript">
<!--
var rad = 100;
var xoff = 350;
var yoff = 120;
var pi = Math.PI;
var inc = pi/40;
var pos=0;
function move() {
pos += inc;
if (pos>= pi ) {pos=0;}
obj.left = xoff;
obj.top = -(rad * Math.sin(pos)) + yoff;
setTimeout("move()", 50);
}
-->
</script>
</head>
<body>
<div id="obj" style="position:absolute; left:400px; top:10px; width:10px; height:31px"><font face="Arial" color="#00cc00"><strong>Прыг!</strong></font></div>
<script language="JavaScript">
<!--
var NN = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) >= 4);
var obj = (NN) ? document.obj : document.all.obj.style;
move();
-->
</script>
</body>
</html>