If you are creating a custom wrapper for a Flex 2 project that uses the History Manager, make sure that you set the width of the IFrame that houses history.htm to at least 22 pixels. Otherwise, it works on FireFox but doesn't work in Internet Explorer. I was pulling out hair today trying to figure out why my example wasn't working in IE until I stumbled across this.
The Flex 2 History Manager gotcha on Internet Explorer article by Aral Balkan, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial 2.0 UK: England License.
If you use the default wrapper created by Flex Builder, the IFrame's width is set to 22 pixels by default.
The Flex 2 History Manager gotcha on Internet Explorer article by Aral Balkan, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial 2.0 UK: England License.

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Hi can yuu tell how properly register (if you can just give a little bit of code that works in firefox and ie)
HistoryManager.register(this);
because it’s work in firefox but not in ie.
thanks.