function popup(name, w, h)
{
  window.open("show_img.php?"+name, "foto","tollbar=no,menubar=no,location=no,personalbar=no,scrollbars=no,status=no,resizable=no,width="+w+",height="+h+", top="+((screen.height/2)-(h/2))+",left="+((screen.width/2)-(w/2)));
} 


function panorama(nazwa, w, h)

{

 var pos_y = (screen.height/2)-(h/2);

 var pos_x = (screen.width/2)-(w/2);

 if( pos_y < 0 ) pos_y = 0;

 if( pos_x < 0 ) pos_x = 0;

 window.open(nazwa, "","tollbar=no,menubar=no,location=no,personalbar=no,scrollbars=no,status=no,resizable=no,width="+ w +",height="+ h +", top="+ pos_y +",left="+ pos_x);

}