function yeniPencere(sayfa,w,h){
win=window.open(sayfa,"","width=" + w + ",height=" + h);
win.moveTo(screen.width/2-w/2,screen.height/2-h/2);
}
function yeniPencereOzel(sayfa,pencere,w,h,params){
win=window.open(sayfa,pencere,"width=" + w + ",height=" + h + "," + params);
win.moveTo(screen.width/2-w/2,screen.height/2-h/2);
}