I'm writing a simple editor in an iframe, but having trouble registering the "oninput" event to detect when the user modifies the text field such as pasting in data etc.

var txtArea = document.getElementById('txtArea');
txtArea.contentWindow.document.designMode="on"; txtArea.contentWindow.document.open(); txtArea.contentWindow.document.write("body{font-size:13px;}"+data.document+""); txtArea.contentWindow.document.close();

$([txtArea.contentWindow.document]).bind("click", updateCaretPosMouse); //fires $([txtArea.contentWindow.document]).bind("keyup", updateCaretPosKeyboard); //fires $([txtArea.contentWindow.document]).bind("input", textChanged); //doesn't fire

If I create a plain old textarea element, and add the "input" event to this, then it works. Do 'input" events not work with iframes WYSIWYG editors?