<!DOCTYPE html>
<html>
<head>
<title>Link to some site</title>
<meta name="viewport" content="width=device-width, minimum-scale=1.0">
</head>
<body>
<h1>Link to some site</h1>
<div><a id="link" href="#">Go to blocked site</a></div>
<script>
function setLink(url) {
document.getElementById('link').href = url;
}
</script>
</body>
</html>