function givebrowser() {
  document.write("Name des Browsers: ",navigator.appName,"<br>")
  document.write("Version: ",navigator.appVersion,"<br>")
  document.write("Ihr Browser unterstützt JavaSkript Version " , jsver, "<br>")
  document.write("Auflösung ", screen.width," x ",screen.height,", ", screen.colorDepth, " Bit Farbtiefe<br>")
}