Contador de palabras

jQuery(function() {
        jQuery(function() {
            var NumeroDePalabras = 1;
            var NumeroDeLetrasPorPalabra = 1;
            var icone_complet = " ";
            var icone_incomplet = " ";


            if (jQuery("#text_editor_textarea").length != 0) {
                jQuery("input[type='submit'][name='post']").attr("disabled", true).css("opacity", "0.5");
                jQuery(".sceditor-container").after("<div id='div_minchars_info'></div>");

                var sceditor = jQuery("#text_editor_textarea").sceditor("instance"),
                    str = sceditor.val(),
                    regex = new RegExp('\\w{' + NumeroDeLetrasPorPalabra + ',}\\b', 'g'),
                    str_arr = str.match(regex),
                    str_len = str_arr == null ? 0 : str_arr.length;

                if (str_len >= NumeroDePalabras)
                    jQuery("input[type='submit'][name='post']").attr("disabled", false).css("opacity", "1");

                sceditor.keyUp(function(e) {
                    str = sceditor.val();
                    str_arr = str.match(regex);
                    str_len = str_arr == null ? 0 : str_arr.length;
                    if (str_len >= NumeroDePalabras) {
                        jQuery("#div_minchars_info").html(" <img src='" + icone_complet + "' alt='' /> Ha escrito <span style='color:green'>" + str_len + "</span> palabras, puedes enviar tu mensaje.");
                        jQuery("input[type='submit'][name='post']").attr("disabled", false).css("opacity", "1");
                    } else {
                        jQuery("#div_minchars_info").html("<img src='" + icone_incomplet + "' alt='' /> Ha escrito <span style='color:red'>" + str_len + "</span> palabra(s). Necesitas " + (NumeroDePalabras - str_len) + " mas para enviar tu mensaje.");
                        jQuery("input[type='submit'][name='post']").attr("disabled", true).css("opacity", "0.5");
                    }
                });
            }
        })
    });