I had a similar problem, and came up with the following code, which will usually work with IE (this suits my needs). I do not know about other broswers, and it can be disabled cleint side in IE. It also seems to ignore cookies, which was something else that I wanted.
http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx
Code:<iframe src="child.htm" id="bframe" style="height:300px;width:300px;border:3px solid blue;" security="restricted"></iframe>