[Moo] element created by swiff, extended by $, but still can't use mootools functions on it - IE only

[karolis]

Here is code example:
$(new Swiff('http://www.example.com/js2/flash/playerV2.swf?' +
$random(0,10000), {
        width: 24,
        height: 24,
        id: id,
        params: {
            'quality': 'high',
            'wmode': 'transparent',
            'bgcolor': '#ffffff',
            'salign': 't'
        },
        vars: vars
}).inject(this.options.where)).addEvent('soundComplete', function(){
        this.fireEvent('complete');
}.bind(this))

In IE error is thrown that "Object doesn't support this property or
method" when I try to add event on element.

If you need standalone code example or more info, please let me know.

Thanks for reading this.