Sometimes we need to customise .aspx page in CRM (unsupported way). So it's very useful if you could show IE address bar at All time. Actually it's very easy to do:
1. Open Internet Explorer, go to [Tools] -> [Internet Options] -> [Security], select a site which contain your CRM website.
2. Click Custom level, under section "Miscellaneous", disable this option: "Allow websites to open windows without address or status bars", and restart IE.