size1 = "Blank";
size2 = "Blank";
size3 = "Blank";

function checkme() {
size1 = document.active_galaxies.galaxyA.value - 0;
if (!size1) {size1 = "Blank";}
size2 = document.active_galaxies.galaxyB.value - 0;
if (!size2) {size2 = "Blank";}
size3 = document.active_galaxies.galaxyC.value - 0;
if (!size3) {size3 = "Blank";}

RightOnFile = 'ag-3correct.html';
TwoRightFile = 'ag-2correct.html';
OneRightFile = 'ag-1correct.html';
WayWrongFile = 'ag-0correct.html';

var CorrectAnswer = 15000000000;
var NumberCorrect = 15000000000;

NumberCorrect = 0;

if (size1 == CorrectAnswer) {
    NumberCorrect++;
}
if (size2 == CorrectAnswer) {
    NumberCorrect++;
}
if (size3 == CorrectAnswer) {
    NumberCorrect++;
}
if (NumberCorrect == 0) {
    location = WayWrongFile;
}
if (NumberCorrect == 1) {
    location = OneRightFile;
}
if (NumberCorrect == 2) {
    location = TwoRightFile;
}
if (NumberCorrect == 3) {
    location = RightOnFile;
}
}