Cacher is the code snippet organizer for pro developers

// ==UserScript==
// @name        Fix Chat ViewPort width
// @namespace   http://blog.codeeg.com
// @description Fix clipping of campfire chats
// @include     *
// @author      Calvin Yu
// ==/UserScript==

(function () {
  if (window.fluid) {
    Campfire.LayoutManager.prototype.adjustChatMessageColumnWidth = function() {
      if (this.chat.IE && !this.chat.IE7) return false;
      var viewportWidth = this.getChatViewportWidth();
      var authorColumnWidth = this.getChatAuthorColumnWidth();
      var messageColumnWidth = viewportWidth - authorColumnWidth - 15;

      var stylesheet = $A(document.styleSheets).last();
      var rules = stylesheet.cssRules || stylesheet.rules;
      var style = rules[rules.length - 1].style;
      if (style) style.width = messageColumnWidth + 'px';
    }
  }
})();