Hallo,
da gibts nen kleinen Trick:
<html><head>
<script>
[code lang=javascript]document.createElement("abbr");
window.onload = function () {
document.getElementsByTagName("abbr").item(0).onmouseover = function () {
alert(this.innerText);
};
};
</script>
</head>
<body>
<abbr>Hello!</abbr>
</body></html>[/code]
angelehnt an http://ejohn.org/blog/html5-shiv/
Mathias