Able to get iframe non-local source html?

I have an idea for a web application.  I want to be able to develop a personal page and load an external page like www.google.com into a frame or iframe.  I was experimenting but began to wonder if what I wanted to do was even possible.  I was wondering if I am able to get the html source code of that external website that i loaded so that i may manipulate/parse it? I thought i heard somewhere that you are only able to get the source of webpages that are local to your site, and not externally loaded sites.

The programming languages I have at my disgretion is PHP, ASP, JavaScript, and HTML.  I could also consider using C++ or Perl.  I think this is possible with AJAX, but don't plan on learning yet another new language at the moment.  Please let me know how i can go about doing this.

Thanks in advance.

-- Jason
propracticeAsked:
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nschaferConnect With a Mentor Commented:
Hi propractice,

See the following thread.
http://www.experts-exchange.com/Web/Web_Languages/HTML/Q_21926190.html#17155324

This can show you how to do this and also points out a couple of issues you should be aware or.

Hope this helps,
Neal.
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propracticeAuthor Commented:
if possible, i can also open a new window, load the external site in it, and grab the source from it, returning it to my original personal page for manipulation/parsing.

--jason
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propracticeAuthor Commented:
thanks nschafer, you didn't give me the answer, but you showed me how to get there.  after a while of playing with the code and such, i was able to get it working.  thanks.
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