But, is it possible? Yes, it is. The pages and the answers of them are exactly the same as when you use it alone.
IE Tab can show those elements which make Internet Explorer to be unique, such as that progress bar or the SSL safe connection icon.
In the lower part, an icon will show then navigator which is being used for each website, so you will know at every moment if the website is being visited throughout Internet Explorer or Mozilla Firefox.
Why should you install this application? Because sometimes, some websites can be viewed only with a certain web browser, and thanks to this utility, you can choose which one you use, and it combines the features of both two.