<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$("p").hover (
function() {
$(this).addClass("hover");
},
function() {
$(this).removeClass("hover");
}
);
</script>
<style type="text/css">
.hover {
color: #ff0000;
font-weight: bold;
}
</style>
<title>jquery test</title>
</head>
<body>
<p>Тестовый параграф</p>
</body>
</html>