diff --git a/admin/editor-js.php b/admin/editor-js.php
index 495ef0ae..1a356645 100644
--- a/admin/editor-js.php
+++ b/admin/editor-js.php
@@ -131,17 +131,24 @@ $(document).ready(function () {
     editor.hooks.chain('enterFakeFullScreen', function () {
         th = textarea.height();
         $(document.body).addClass('fullscreen');
-        textarea.css('height', $(window).height() - toolbar.outerHeight());
+        var h = $(window).height() - toolbar.outerHeight();
+        
+        textarea.css('height', h);
+        preview.css('height', h);
     });
 
     editor.hooks.chain('enterFullScreen', function () {
         $(document.body).addClass('fullscreen');
-        textarea.css('height', window.screen.height - toolbar.outerHeight());
+        
+        var h = window.screen.height - toolbar.outerHeight();
+        textarea.css('height', h);
+        preview.css('height', h);
     });
 
     editor.hooks.chain('exitFullScreen', function () {
         $(document.body).removeClass('fullscreen');
         textarea.height(th);
+        preview.css('height', 'auto');
     });
 
     editor.run();
diff --git a/admin/js/markdown.js b/admin/js/markdown.js
index 8d669c5e..b091ad7c 100644
--- a/admin/js/markdown.js
+++ b/admin/js/markdown.js
@@ -225,7 +225,7 @@ this.makeHtml = function(text) {
         return all;
     });
 
-    if (text.indexOf('<!--more-->')) {
+    if (text.indexOf('<!--more-->') > 0) {
         var parts = text.split(/\s*<\!\-\-more\-\->\s*/),
             summary = parts.shift(),
             details = parts.join('');
@@ -5307,7 +5307,7 @@ else
     commandProto.doMore = function (chunk, postProcessing) {
         chunk.startTag = "<!--more-->\n\n";
         chunk.selection = "";
-        chunk.skipLines(2, 1, true);
+        chunk.skipLines(2, 0, true);
     }
 
     commandProto.doTab = function (chunk, postProcessing) {