JQuery.. why is this code not working? (return: false;)

[callumd]

I have some some JQuery code that is attached to an image's click event. The image has a href value attached to it. That part works well. When the button is clicked, the JQuery does an AJAX call to another script, which returns a value, and sets that value to variable called 'data'. That part works well. The function then checks if the value (a string) is 'TRUE' or 'FALSE'. That part works well.

What I then want to do is, if the value of 'data' is 'FALSE', then I want to prevent the user from leaving the page (ie, 'return false;', and override the href on the image). If the value of 'data' is 'TRUE', then I want the user to sail on through to the next page (ie, just don't do a 'return false'; ).

This fails:

<script type="text/javascript">
$(document).ready(function() {

    $('.print_btn').click(function() {
    $.get('some_script.php',
          { val1 : "2", val2: "30" },
          function(data) { if (data == 'TRUE') { alert ('TRUE'); } else { alert ('FALSE'); return false; } },
          'text');
  });

});
</script>

And this fails:

<script type="text/javascript">
$(document).ready(function() {

    $('.print_btn').click(function() {
    $.get('some_script.php',
          { val1 : "2", val2: "30" },
          function(data) { if (data == 'TRUE') { alert ('TRUE'); } else { alert ('FALSE'); } },
          'text');
  });
  if (data == 'FALSE') {
    return false;
  }

});
</script>

HELP?

[justinbarneskin]

true and false are not always string.
Leave off the quotes when setting and retrieving
or to cut confusion set true as 1 and false as 0 without quotes