Hello to everyone who replied,
Thank you very much for your advice, it is very usefull. I also tried like you explained a JavaScript code which uses the "window.open" method and indeed you are correct you can get rid of everything except those 3 buttons in the title bar.
I will also investigate the first suggestion within a few days to see if I can accomplish a movable window without those 3 buttons. I saw a website which uses this kind of navigation window but they used HTML and a kind of layer to create this window. Regretfully I received an email which contained an attachement which was a deliberatelly virus file (extension .txt.bat) so I cannot give the URL here.
However I will share my experiences with you and other people here on the forum. Despite the fact I am a PHP - JavaScript beginner, I have the motivation to create that navigation window. And luckily you put me a good way in the correct direction.
I appreciate your efforts and time spend on my problem very much. Therefore I thank you very much.
I also wish you a very nice day and all the best! When I succesfully created this navigation window I will post it here on this forum.
Friendly greetings,
Chrissy