jQuery, id Selector
You create an id for one or more HTML tags and with jQuery you can manipulate it. Syntax: $('#idName').css(propertyName', 'propertyValue');
See the example below. Show / Hide Script Show / Hide Demo
<html>
<head>
<style type='text/css'>
</style>
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js'></script>
<script type='text/javascript'>
$(document).ready(function(){
$('#box').css('background','yellow')
.css('border','solid 16px green')
})
</script>
</head>
<body>
<div id='box'>This is a div tag with box id.</div>
<div id='notbox'>This is a div tag with notbox id.</div>
</body>
</html> This is a div tag with box id. This is a div tag with notbox id.