title: tinymce not autoresize on init correctly
body: <p>I'm using Tinymce editor with autoresize plugin. My problem is that when tinymce instance initialized, it doesn't resize correctly for wrap in height the content. </p>
  
  <p>If I have a long text in editor (example 15 rows), when tinymce is shown, autoresize resize editor area only for 5 rows and other 10 rows aren't shown. Only when I type something in editor area, autoresize grow for all 15 rows.</p>
  
  <p>this is a javascript autoresize plugin:</p>
  
  <pre><code>/**
   * editor_plugin_src.js
   *
   * Copyright 2009, Moxiecode Systems AB
   * Released under LGPL License.
   *
   * License: http://tinymce.moxiecode.com/license
   * Contributing: http://tinymce.moxiecode.com/contributing
   */
  
  (function() {
      /**
       * Auto Resize
       *
       * This plugin automatically resizes the content area to fit its content height.
       * It will retain a minimum height, which is the height of the content area when
       * it's initialized.
       */
      tinymce.create('tinymce.plugins.AutoResizePlugin', {
          /**
           * Initializes the plugin, this will be executed after the plugin has been created.
           * This call is done before the editor instance has finished it's initialization so use the onInit event
           * of the editor instance to intercept that event.
           *
           * @param {tinymce.Editor} ed Editor instance that the plugin is initialized in.
           * @param {string} url Absolute URL to where the plugin is located.
           */
          init : function(ed, url) {
              var t = this, oldSize = 0;
  
              if (ed.getParam('fullscreen_is_enabled'))
                  return;
  
              /**
               * This method gets executed each time the editor needs to resize.
               */
              function resize() {
                  var deltaSize, d = ed.getDoc(), body = d.body, de = d.documentElement, DOM = tinymce.DOM, resizeHeight = t.autoresize_min_height, myHeight;
  
                  // Get height differently depending on the browser used
                  myHeight = tinymce.isIE ? body.scrollHeight : (tinymce.isWebKit &amp;&amp; body.clientHeight == 0 ? 0 : body.offsetHeight);
  
                  // Don't make it smaller than the minimum height
                  if (myHeight &gt; t.autoresize_min_height)
                      resizeHeight = myHeight;
  
                  // If a maximum height has been defined don't exceed this height
                  if (t.autoresize_max_height &amp;&amp; myHeight &gt; t.autoresize_max_height) {
                      resizeHeight = t.autoresize_max_height;
                      body.style.overflowY = "auto";
                      de.style.overflowY = "auto"; // Old IE
                  } else {
                      body.style.overflowY = "hidden";
                      de.style.overflowY = "hidden"; // Old IE
                      body.scrollTop = 0;
                  }
  
                  // Resize content element
                  if (resizeHeight !== oldSize) {
                      deltaSize = resizeHeight - oldSize;
                      DOM.setStyle(DOM.get(ed.id + '_ifr'), 'height', resizeHeight + 'px');
                      oldSize = resizeHeight;
  
                      // WebKit doesn't decrease the size of the body element until the iframe gets resized
                      // So we need to continue to resize the iframe down until the size gets fixed
                      if (tinymce.isWebKit &amp;&amp; deltaSize &lt; 0)
                          resize();
                  }
              };
  
              t.editor = ed;
  
              // Define minimum height
              t.autoresize_min_height = parseInt(ed.getParam('autoresize_min_height', ed.getElement().offsetHeight));
  
              // Define maximum height
              t.autoresize_max_height = parseInt(ed.getParam('autoresize_max_height', 0));
  
              // Add padding at the bottom for better UX
              ed.onInit.add(function(ed){
                  ed.dom.setStyle(ed.getBody(), 'paddingBottom', ed.getParam('autoresize_bottom_margin', 50) + 'px');
              });
  
              // Add appropriate listeners for resizing content area
              ed.onChange.add(resize);
              ed.onSetContent.add(resize);
              ed.onPaste.add(resize);
              ed.onKeyUp.add(resize);
              ed.onPostRender.add(resize);
  
              if (ed.getParam('autoresize_on_init', true)) {
                  ed.onLoad.add(resize);
                  //ed.onLoadContent.add(resize);
                  ed.onLoadContent.add(function(ed, l) {
                      resize();
  
                           // Because the content area resizes when its content CSS loads,
                           // and we can't easily add a listener to its onload event,
                           // we'll just trigger a resize after a short loading period
                           setTimeout(function() {
                              resize();
                           }, 400);
  
                  });
              }
  
              // Register the command so that it can be invoked by using tinyMCE.activeEditor.execCommand('mceExample');
              ed.addCommand('mceAutoResize', resize);
          },
  
          /**
           * Returns information about the plugin as a name/value array.
           * The current keys are longname, author, authorurl, infourl and version.
           *
           * @return {Object} Name/value array containing information about the plugin.
           */
          getInfo : function() {
              return {
                  longname : 'Auto Resize',
                  author : 'Moxiecode Systems AB',
                  authorurl : 'http://tinymce.moxiecode.com',
                  infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/autoresize',
                  version : tinymce.majorVersion + "." + tinymce.minorVersion
              };
          }
      });
  
      // Register plugin
      tinymce.PluginManager.add('autoresize', tinymce.plugins.AutoResizePlugin);
  })();
  </code></pre>
  
  <p>it is present a workaround:</p>
  
  <pre><code>                     // Because the content area resizes when its content CSS loads,
                       // and we can't easily add a listener to its onload event,
                       // we'll just trigger a resize after a short loading period
                       setTimeout(function() {
                          resize();
                       }, 400);
  </code></pre>
  
  <p>but a timer solution isn't a beautiful because it start small in height, so then after 400 ms tinymce content area autoresize correctly. 
  Does alternative solution exist or  how can I fix it?</p>