<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/prototype/1.7.2.0/prototype.js"></script>
</head>
<body>
<p id="p-id"></p>
<script>
// Prototype
function set_p()
{
$("p-id").insert("Prototype")
}
Event.observe(window, "load", set_p);
/*
run:
"Prototype" text in "p-id"
*/
</script>
</body>
</html>