This pertains to a form wizard with 5 steps, I don't want the user to hit back and lose form data in any step 2-4. I have added a flag for the submit function and need to add this one for the first step. If they get there by accident and try and leave I dont want the cofirm dialog popping up.

<script type="text/javascript">
    $(document).ready(function(){
      var action_is_post = false;
    $("form").submit(function () {
    action_is_post = true;
 });

//this is the trouble spot. on the first step the "navigation" of the form has a class 
of current (on step one = current)
$(this).ready(function () {
if ($("#stepDesc0").is(".current")) {
action_is_post = true;    
}
);   

window.onbeforeunload = confirmExit;
function confirmExit()
{
if (!action_is_post)
return 'Using the browsers back, refresh or close button will cause you to lose all
form data. Please use the Next and Back buttons on the form.';
}
});
</script>