function turnOff(dname) {
    document.getElementById(dname).style.display = 'none';
}
function turnOn(dname) {
    document.getElementById(dname).style.display = 'block';
}
function rswitcher(wert) {
    if (wert=='1'){
        document.getElementById('r1').className='tab1 tab1on';
        document.getElementById('r2').className='tab2';
        document.getElementById('r3').className='tab3';
    }else if (wert=='2'){
        document.getElementById('r1').className='tab1';
        document.getElementById('r2').className='tab2 tab2on';
        document.getElementById('r3').className='tab3';
    }else if (wert=='3'){
        document.getElementById('r1').className='tab1';
        document.getElementById('r2').className='tab2';
        document.getElementById('r3').className='tab3 tab3on';
    }
}