// Java Skript-Übung von R. Becker V0.1.0815 19.02.2006
	// Ur-Version vom 04.06.2001 /RB

	function systeminfo()
	{
		var win;
		var name_des_browsers;
		var codename_des_browsers;
		var version_des_browsers;
		var plattform_des_browsers;
		var hoehe;
		var breite;
		var breiteMin
		var position;
		var versionindex;

		win=window.open("","Systeminfo","width=450,height=280,resizable=yes");

		name_des_browsers=navigator.appName;
		codename_des_browsers=navigator.appCodeName;
		version_des_browsers=navigator.appVersion;
		plattform_des_browsers=navigator.platform;
		navigator_agent=navigator.userAgent;
		hoehe=screen.height;
		breite=screen.width;
		position = -1;
		breiteMin = 1024;


		if(navigator.userAgent.indexOf("Firefox")!=-1)
		{
			versionindex=navigator.userAgent.indexOf("Firefox")+8;
			if (parseInt(navigator.userAgent.charAt(versionindex))>=1)
			name_des_browsers = "Firefox";
			version_des_browsers = navigator_agent.substring(versionindex,(versionindex+5));
		}

		if(navigator.userAgent.indexOf("Opera")!=-1)
		{
			versionindex=navigator.userAgent.indexOf("Opera")+6;
			if (parseInt(navigator.userAgent.charAt(versionindex))>=1)
			name_des_browsers = "Opera";
			version_des_browsers = navigator_agent.substring(versionindex,(versionindex+5));
		}



		if (name_des_browsers=="Microsoft Internet Explorer")
		{
			position = version_des_browsers.indexOf("MSIE")
			// dann isses wohl der Winzigweich-Browser ... und das bedeudet Arbeit
			if 	(position == -1)
			{
				// dann ist es IE4 oder älter
				version_des_browsers = "MSIE 4";
			}
			else
			{
				versionindex=navigator.userAgent.indexOf("MSIE")+5;
				version_des_browsers = navigator_agent.substring(versionindex,(versionindex+3));
			}

		}
		else
		{
			if ((name_des_browsers =="Netscape") && (version_des_browsers.charAt(0) == "5"))
			{

				versionindex=navigator.userAgent.indexOf("Netscape")+9;
				version_des_browsers = navigator_agent.substring(versionindex,(versionindex+4))+" "+version_des_browsers.substring(3,20);
			}
		}
		win.document.write("<H4>Dein Browser: "+ name_des_browsers + "</H4>");
		win.document.write("<H4>Codename: "+ codename_des_browsers + "</H4>");
		win.document.write("<H4>Version: " + version_des_browsers + "</H4>");
		win.document.write("<H4>Betriebssystem: "+ plattform_des_browsers + "</H4>");
		win.document.write("<H4>Bildschirmauflösung: "+ breite + " Pixel x " + hoehe + "Pixel  </H4>");

		if (parseInt(breiteMin) > parseInt(breite))
		{
			win.document.write("<H4>Wir empfehlen mindestens die Auflösung 1024 x 768 Pixel</H4>");
		}
		else
		{
			win.document.write("<H4>Diese Auflösung ist prima für unsere Homepage!</H4>");
		}
	}