<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.7.1.js'></script>
<style type='text/css'>
td.bgimage {
padding: 10px;
background: #333;
}
td.bgimage.toggled {
background: #f00;
}
</style>
<script type='text/javascript'>
$(window).load(function(){
function colorChange(){
setTimeout(function(){
$('td.bgimage').toggleClass('toggled');
colorChange();
}, 1000);
}
colorChange();
});
</script>
</head>
<body>
<table>
<tr>
<td class="bgimage"> </td>
</tr>
</table>
</body>
</html>
【background】
