Help changing Scroll Menu Values

[bmccarthy123]

Hi,

I've got this scroll menu system in my web site. I was wondering if anyone could lend me a hand understanding why I can't get my scrollMenu to start and stop at these coordinates, which you can see here:

Code:
if (this._x>= -600)
{
this._x = -1500;
}

if (this._x<= -1501)
{
this._x = -601;
}


What I want to have is 10 Icons scrolling, but if they don't totally got off screen it looks like they skip. Does anuyone have any ideas?

Thanks In Advance