I added this to my website head tag:
<meta name="apple-mobile-web-app-capable" content="yes">
And it works fine, until a user logs into the simple website user system I created. At this point, a permanent header and footer taskbar is shown and will disappear.
The top header has a button (in Hebrew, it reads "סיום" which is probably "end" or something similar in the English iOS version) which will allow the user to log off, and which I did not program at all.
How can I keep the full screen fell even if a user logs into his account on my website?