function form() {
  open("form.html","okno","width=550,height=500");
}

function prenumerata() {
  open("http://www.colorfulmedia.pl/prenumerata.php","prenumerata","width=480,height=6500,scrollbars=yes");
}

function okienko() {
  open("okienko.html","okienko","width=680,height=800");
}
function okladki() {
  open("okladki.html","okladki","width=840,height=870");
}

function dodatki() {
  open("dodatki.html","dodatki","width=800,height=440");
}