Untitled

<!DOCTYPE html>
<html>
<head>
	<title></title>
<script type="text/javascript" src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.4.1.min.js"></script>
<style type="text/css">
#cir{
	width: 150px;
	height: 150px;
	border-radius: 50%;
	background-color: green;
}
.squ{
	width: 150px;
	height: 150px;
	margin: 10px;
	background-color: red;
}
</style>

</head>
<body>

	<div id="cir"></div>
	<p> this is some text</p>
	<iframe src="https://edition.cnn.com/"></iframe>
	<script type="text/javascript">

		$("#cir").hover(function() {
			$("iframe").attr("src","https://www.ecowebhosting.co.uk");
		});
	</script>
</body>
</html>