function pop(plik,w,h)
{
aw=800;
ah=600;
okno = null;
if(window.screen)
{
aw = screen.availWidth;
ah = screen.availHeight;
}
dane="width="+w+",height="+h+",left="
+(aw-w)/2+",top="
+(ah-h)/2
+",toolbar=no,location=no,directories=no,"
+"status=no,menubar=no,"
+"scrollbars=yes,resizable=no";
okno=window.open(plik,'pop',dane);
}