simple jquery snippet for preventing double submits in form

preventDoubleSubmit.js

(function (jQuery) {
    /**
     * prevents double submits
     * 
     * usage 
     * 
     * just fire on document.ready, i.e.
     * $(function(){
     *     $.preventDoubleSubmit()
     * });
     */
    jQuery.preventDoubleSubmit = function () {
        jQuery('form').each(function () {
            jQuery(this).submit(function () {
                if (this.beenSubmitted) {
                    return false;
                }
                else {
                    this.beenSubmitted = true;
                    jQuery(this).find('[type=submit]').attr('disabled', 'disabled');
                }
            });
        });
    };
})($);