I am unable to give you the URL as this is just for Internal Testing only.
However , I can give you complete steps how this error occurred.
The browser is IE6 with CuteEditor.Net V6.2 (should be the latest version)
Button With Circle is the Button I clicked
1.)
2)
3.)
4.) Key in Some Text and Click "Save" button
5.) Javascript error produced. Click "No" button produced another javascript error as shown in Step 6.)
6.) Click "No" button again produce another error as shown in Step 7.)
7.) Click "Dont' Send" and the whole Browser (IE6) gone.