function openBrWindow(theURL,winName,features, myWidth, myHeight, isCenter){
        if(window.screen){
                if(isCenter){
                        if(isCenter=="true"){
                                var myLeft       = (screen.width-myWidth)/2;
                                var myTop        = (screen.height-myHeight)/2;
                                features        += (features!='')?',':'';
                                features        += ',left='+myLeft+',top='+myTop;
                        }
                        if(isCenter=="hide"){
                                features        += (features!='')?',':'';
                                features        += ',left=10000,top=100';
                        }
                }
        }
        window.open(theURL,winName,features+((features!='')?',':'')+'width='+myWidth+',height='+myHeight).focus();
}

function startmuziek(actie){
	openBrWindow('/php/kid/muziek.php?'+actie,'muziek','toolbar=no,location=no,status=yes,menubar=no,scrollbars=no,resizable=no', '315','380', 'true');
}