first import

sites/all/modules/twitter/twitter_post/twitter_post.js

@@ -0,0 +1,33 @@
+/**
+ * Attach handlers to toggle the twitter message field and inform the number
+ * of characters remaining to achieve the max length
+ */
+(function ($) {
+  Drupal.behaviors.twitter_post = {
+    attach: function (context, settings) {
+      $("#twitter-textfield", context).keyup(function() {
+        var charsLeft = (140 - $(this).val().length);
+        var descDiv = $(this).next();
+        $(descDiv).html("<strong>" + charsLeft + "</strong> characters remaining");
+        if (charsLeft < 0) {
+          $(descDiv).addClass("negative");
+        } else {
+          $(descDiv).removeClass("negative");
+        }
+      });
+
+      if (!$("#twitter-toggle").attr("checked")) {
+        $(".form-item-twitter-status").hide();
+      }
+
+      $("#twitter-toggle").bind("click", function() {
+        if ($("#twitter-toggle").attr("checked")) {
+          $(".form-item-twitter-status").show();
+        }
+        else {
+          $(".form-item-twitter-status").hide();
+        }
+      });
+    }
+  };
+}(jQuery));