There seems to be a bug in wtooltip plugin. Load the following page in your browser, the first time when the tooltip comes up, it shows foo; starting from the second time, it shows null. I used jquery 1.4.2 and the latest version of the plugin :
Note: the problem goes away if you specify content, for example: $("a").wTooltip({content: "bar"});
- <html>
<head>
<script type="text/javascript" src="jquery-1.4.2.js"></script>
<script type="text/javascript" src="http://plugins.jquery.com/files/wtooltip.js_3.txt"></script>
<script type="text/javascript">
$(document).ready(function() {
$("a").wTooltip();
});
</script>
</head>
<body>
<a href="www.cnn.com" id="1" title="foo">cnn</a>
</body>
</html>