【class】
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.4.4.min.js'></script>
<script type='text/javascript'>
$(window).load(function(){
$(document).ready(function() {
$('#target').click(function() {
$(this).removeAttr('style');
});
});
});
</script>
</head>
<body>
<button style="color: blue" id='target'>here</button>
</body>
</html>
