refreshing/triggering webpage in the iframe

Hello,

I have a webpage and in this webpage has 3 ajax update panels for updating the information in the field and also use for the control button of being refresh or trigger, which it works fine and the webpage is not refreshing or triggering when the control button is in use, but when I use the iframe to host this webpage and the webpage refreshes/triggers on the control button. So I'm wondering what cause the webpage refreshes/triggers in the control button event in the iframe, does anyone knows?  Thanks
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