Delete onRollOver

Hi, i am having some problems. Anyone having an idea on how i can solce this:>

i have this scroller: http://www.mindcrusher.ro/probleme/imp.swf
working fine

When i load the movie in a container in here: http://www.mindcrusher.ro/probleme/bun.swf , there are problems. same file, but getting stuck and loosing the on roll over for the picture-buttons.

I think there is a problem with this code:

panel.onRollOver = panelOver;

function panelOver()
{
    this.onEnterFrame = scrollPanel;
    delete this.onRollOver;
}

var b = stroke.getBounds(_root);

function scrollPanel()
{
    if (_xmouse < b.xMin || _xmouse > b.xMax || _ymouse < b.yMin || _ymouse > b.yMax )
    {
        this.onRollOver = panelOver;
        delete this.onEnterFrame;
    }
    var xdist = _xmouse - 512; //jumatate din lungimea fimului
    panel._x += Math.round(-xdist / 50); //speed
    if (panel._x >= 13)
    {
        panel._x = 13;
    }

    if (panel._x <= -350)
    {
        panel._x = -350;
    }
}

i took it from a tutorial. I think it’s something with the “delete this.onRollOver” line, but i am not sure, because i never user this before (delete onrollover thingies).

Thank you
dS