Hi all, I did clear temp files, and I also used the Object tag for IE, but it doesn't work... To illustrate this problem more clearly, I have places the files into the server below, http://test.sc23.info/test1.html http://test.sc23.info/test2.html Please take a look as I have no clue on what I have done wrong… As noted on my original post, the result was very different on IE and FF, FF can interpret the frame correctly, but IE cannot. The fla source file can be find below, http://test.sc23.info/test.fla Thanks guys!