1<body>
2Load <a href="http://www.google.com/">Google</a> and drag the logo onto this page.  The second time you drag it on, Safari will crash.
3<script>
4function deleteSelection() {
5  document.execCommand("delete");
6}
7document.designMode="on";
8document.body.addEventListener("DOMNodeInserted", deleteSelection, false);
9</script>
10</body>
11