i use the adsense code in one blog system when posting article var html editor. but, the blog system auto change the adsense code into a IFrame like this: <IFRAME name=google_ads_frame marginWidth=0 marginHeight=0 src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-0299088706876700& dt=1175974902937&lmt=1175974902&alt_color=0000FF& format=160x600_as&output=html&channel=5355099410& url=http%3A%2F%2Fpost.blog.hexun.com%2Finc%2Fadminarticleedit.aspx%3Fblogname%3Dhorisly& color_bg=000000&color_text=c48400&color_link=FF6FCF& color_url=c48400&color_border=000000&ad_type=text_image&u_h=768&u_w=1024&u_ah=738&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameBorder=0 width=160 scrolling=no height=600 allowTransparency></IFRAME> Code (markup): is that against adsense's TOS?
Oh yeah that is a big no-no. https://www.google.com/adsense/support/bin/answer.py?answer=48182&topic=8423 See section under "Site and Ad Behaviour".