【visible】
<html>
<head>
<script type="text/javascript" src='http://code.jquery.com/jquery-1.5.2.js'></script>
<script type="text/javascript">
$(document).ready(function(){
$("div:visible").click(function () {
$(this).css("background", "yellow");
});
});
</script>
</head>
<body>
<span></span>
<div style="display:none;">Hider!</div>
<div>click me</div>
</body>
</html>
