function PopUp(pageURL,w,h,x)
{
   var left = (screen.width/2)-(w/2);
   var top = (screen.height/2)-(h/2);
   var targetWin = window.open (pageURL, 'Omonetach.pl - wszystko czego potrzebujesz!', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
}