var BrowserName = navigator.appName;
        var BrowserVers = parseInt(navigator.appVersion);

        if ((BrowserName == 'Netscape' && BrowserVers >= 3)||
            (BrowserName == 'Microsoft Internet Explorer' && BrowserVers >= 4)){

button_11_1 = new Image();
button_11_1.src = "pics/deutsch_1.gif";
button_11_2 = new Image();
button_11_2.src = "pics/deutsch_2.gif";

button_12_1 = new Image();
button_12_1.src = "pics/english_1.gif";
button_12_2 = new Image();
button_12_2.src = "pics/english_2.gif";

button_13_1 = new Image();
button_13_1.src = "pics/spanisch_1.gif";
button_13_2 = new Image();
button_13_2.src = "pics/spanisch_2.gif";




	}						//of if

function MarkPlay(imgDocID1,imgObjName1) {

	var BrowserName = navigator.appName;
	var BrowserVers = parseInt(navigator.appVersion);

	if ((BrowserName == 'Netscape' && BrowserVers >= 3)||
		(BrowserName == 'Microsoft Internet Explorer' && BrowserVers >= 4)){

	document.images[imgDocID1].src = eval(imgObjName1 + ".src");
	}					// of if
	}					// of function