The uiquery plugin bgiframe (version 2.1.1) causes the following java script error in Internet Explorer 9:

```
jquery.bgiframe.js, line 94 character 5

```

My menu does not work any more, I hope the reason is this error.

Any ideas?

ADDED:

The line in jquery.bgiframe.js is:

```
this.insertBefore( document.createElement(html), this.firstChild );

```

and the error sais:

```
SCRIPT5022: DOM Exception: INVALID_CHARACTER_ERR (5) 

```