I have multiple forms on a page, for each of them I want the user to confirm before form submission. but when the user confirms to submit, how do I let this dialog know which form the user is sumbitting? Does it take custom parameters? Thanks.

$("#dialog-confirm").dialog({
        resizable: false,
        height:140,
        modal: true,
        buttons: {
            'Confirm submit': function() {
                document.______???????_____.submit();
            },
            Cancel: function() {
                $(this).dialog('close');
            }
        }
    });
$('.allForms').submit(function(){
      $('#dialog-confirm').dialog('open');
});