Bring and require equalize from spree_backend

app/assets/javascripts/admin/all.js

@@ -32,6 +32,7 @@
 //= require admin/spree_backend
 //= require modernizr
 //= require spin
+//= require equalize
 //= require css_browser_selector_dev
 //= require responsive-tables
 //= require admin/spree_paypal_express

vendor/assets/javascripts/equalize.js

@@ -0,0 +1,41 @@
+/**
+ * equalize.js
+ * Author & copyright (c) 2012: Tim Svensen
+ * Dual MIT & GPL license
+ *
+ * Page: http://tsvensen.github.com/equalize.js
+ * Repo: https://github.com/tsvensen/equalize.js/
+ *
+ * The jQuery plugin for equalizing the height or width of elements.
+ *
+ * Equalize will accept any of the jQuery Dimension methods:
+ *   height, outerHeight, innerHeight,
+ *   width, outerWidth, innerWidth.
+ *
+ * EXAMPLE
+ * $('.parent').equalize(); // defaults to 'height'
+ * $('.parent').equalize('width'); // equalize the widths
+ */
+(function($, window, document, undefined) {
+
+  $.fn.equalize = function(equalize) {
+    var $containers = this, // this is the jQuery object
+        equalize    = equalize || 'height',
+        type        = (equalize.indexOf('eight') > 0) ? 'height' : 'width';
+
+    if (!$.isFunction($.fn[equalize])) { return false; }
+
+    return $containers.each(function() {
+      var $children = $(this).children(),
+          max = 0; // reset for each container
+
+      $children.each(function() {
+        var value = $(this)[equalize]();  // call height(), outerHeight(), etc.
+        if (value > max) { max = value; } // update max
+      });
+
+      $children.css(type, max +'px'); // add CSS to children
+    });
+  };
+
+}(jQuery, window, document));