<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script>
function boom()
{
var e = document.body;
var sel = window.getSelection();
window.getSelection().removeAllRanges();
var r0 = document.createRange();
r0.setStart(e, 0);
r0.setEnd(e, 1);
window.getSelection().addRange(r0);
var r1 = document.createRange();
r1.setStart(e, 1);
r1.setEnd(e, 1);
window.getSelection().addRange(r1);
window.getSelection().deleteFromDocument();
}
</script>
</head>
<body onload="boom();" contenteditable="true">x</body>
</html>