function musikfenster(){
window.open("praxis/melodie.htm","Musik","left=640,top=0,width=300,height=100,titlebar=yes,scrollbars=no,menubar=no,location=no,toolbar=no,status=no,resizable=yes,dependent=yes");
}
function abspielen() {
    if (navigator.appName == 'Microsoft Internet Explorer'){
    document.write('<embed src="sinning.mp3" type="audio/x-mpeg" width="280" height="45" autostart="true" hidden="false"></embed><noembed>Ihr Browser findet kein Ton-PlugIn!</noembed>\n');
    document.close();
    }
    else if (document.getElementById){
    document.write('<object data="sinning.mp3" type="audio/x-mpeg" autostart="true" width="280" height="45" align="middle">Ihr Browser findet kein Ton-PlugIn!\n');
    document.write('</object>\n');
    document.close();
    }
}