$(document).ready(function () {
    checkIfFormIsSubmitted();
});

//CMS-282 - Wouter Dirks - 06-10-2010
function checkIfFormIsSubmitted() {
    $('form').submit(function () {
        if ($('form').attr("isSubmitted")) {
            return false;
        }

        //CMS-441 - Wouter Dirks - 14-10-2010 - Page_IsValid is sometimes undefined
        if (typeof(Page_IsValid) != "undefined" && Page_IsValid) {
            $('form').attr("isSubmitted", true);
        }
    });
}