<!DOCTYPE HTML>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.js"></script>
<style>
.selected {
color: red;
}
</style>
</head>
<body>
<li class="point">Click me!</li>
<br>
<this>This is text!</this>
<script>
$('li.point').click(function() {
$('this').addClass('selected');
});
</script>
</body>
</html>