added resizing of content window

app/assets/javascripts/layout.js

@@ -0,0 +1,29 @@
+(function() {
+  Danbooru.Layout = {};
+  
+  Danbooru.Layout.initialize = function() {
+    $(window).resize(Danbooru.Layout.restyle_content);
+  }
+  
+  Danbooru.Layout.restyle_content = function() {
+    if ($(window).width() > 1100) {
+      $("#content").css("max-width", "50em");
+    }
+
+    if ($(window).width() > 1300) {
+      $("#content").css("max-width", "60em");
+    }
+
+    if ($(window).width() > 1500) {
+      $("#content").css("max-width", "70em");
+    }
+
+    if ($(window).width() < 1000) {
+      $("#content").css("max-width", "40em");
+    }
+  }
+})();
+
+$(document).ready(function() {
+  Danbooru.Layout.initialize();
+});

app/assets/stylesheets/common/main_layout.css.scss

@@ -46,7 +46,7 @@ div#page {
   }
 
   section#content {
-    width: 80%;
+    max-width: 50em;
     float: left;
     padding-left: 2em;
     overflow: visible;