<!DOCTYPE html>
<html>
<head>
	<script src="placeholder.js"></script>
	<style type="text/css">
	input {font-size: 1em}
	html {background:#F0F0F0}
	</style>
</head>
<body>
	<input placeholder="inbox@disney.com" id="some_input">
	<script type="text/javascript">
	window.onload = function(){
		inputPlaceholder( document.getElementById('some_input') )
	}
	</script>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
	<script src="jquery.textPlaceholder.js"></script>
	<style type="text/css">
	input {font-size: 1em}
	html {background:#F0F0F0}
	</style>
</head>
<body>
	<input placeholder="inbox@disney.com" id="disney_inbox">
	<script type="text/javascript">
	$(function(){
		$("#disney_inbox").textPlaceholder();
	});
	</script>
</body>
</html>

Use jquery.textPlaceholder.js on demo page.
Use jquery.textPlaceholder.js on demo page.
