<p>This tests CreateLink for caret selections.  A link containing the url text should be inserted.</p>
<div contenteditable="true" id="div">There should be a link between these two braces: {}</div>

<script>
var div = document.getElementById("div");
var text = div.firstChild;
var selection = window.getSelection();
selection.setPosition(text, text.length - 1);

document.execCommand("CreateLink", false, "http://www.apple.com/");
</script>