Hi, yep I'm new in this forum. Thanks for your welcome :).
I get this error just embedding the suggested code in this webpage to put the calculator in my website.
<iframe width="590" height="390" src="http://web2.0calc.com/widgets/horizontal/" scrolling="no" style="border: 1px solid #silver; ">
</iframe>
<br />
<a href="http://web2.0calc.com/">Web 2.0 scientific calculator</a>
So I really don't know what to do if the source html code is not working, because there's no advanced functions to think that I was doing something wrong :S.
