IFrame Link Catch Problem


Well, i am testing NCrawler code for about 3 months and i solve many problems with it but i have a new problem could not solve yet. The problem is with the IFrames. Some web pages like http://www.akcadaghaber.com/ has so many IFrames and NCrawler could not catch the link urls which the IFrame contents has. So i could not crawl this kind of sites and I have 315 link urls like the web page i mentioned.
Is there any suggentions to how i crawl them and get contents??
Waiting for your response ASAP!..