function openWindow(url,title,w,h,scroll){
    var settings = 'width='+w+',height='+h+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
    window.open(url,title,settings);
}

function openWindowPlaced(url,title,w,h,l,t,scroll){
    var settings = 'width='+w+',height='+h+',screenX='+l+',screenY='+t+',left='+l+',top='+t+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
    window.open(url,title, settings)
}

function openWindowCentered(url,title,w,h,scroll){
    var l = (screen.width-w)/2;
    var t = (screen.height-h)/2;
    var settings = 'width='+w+',height='+h+',screenX='+l+',screenY='+t+',left='+l+',top='+t+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes';
    window.open(url,title, settings)
}