Its possible and simple, Why do we need to change the default browsewr, sometime when you install firefox or safari or any broswer it ask you to set as default browser which make setting for the complete system, then that becomes your default browser;to avoid this thing be sure when you are setting up or installing any new browser because that will prompt for making it as default.

Now If you would like to change your default broswer few steps and you will get your browser back.

You need to open your visual studio and on .aspx,html pages only.

Note that there is also an optional drop-down at the bottom of the dialog that lets you select the default browser window size when loading.  You can choose 800×600 or 1024×768 or any size which as per your resolutions settting.

Joggee