Now all modules are in core modules folder

modules/imagecache/imagecache.js

@@ -0,0 +1,50 @@
+/*global Drupal,jQuery */
+
+(function($) {
+  "use strict";
+
+  Drupal.imagecache = {
+    /**
+     * Remove the files directory prefix from a path.
+     */
+    stripFileDirectory: function(path) {
+      var filePath = Drupal.settings.imagecache.filesDirectory;
+      if (path.substr(0, filePath.length + 1) === filePath + '/') {
+        path = path.substr(filePath.length + 1);
+      }
+      return path;
+    },
+
+    createUrl: function(preset, path) {
+      var stripped = this.stripFileDirectory(path);
+      // If the preset is invalid, return the path to the original image.
+      if ($.inArray(preset, Drupal.settings.imagecache.presets) !== -1) {
+        return Drupal.settings.imagecache.filesUrl + '/imagecache/' + preset + '/' + stripped;
+      }
+      return Drupal.settings.imagecache.filesUrl + '/' + stripped;
+    }
+  };
+
+  Drupal.theme.prototype.imagecache = function(preset, path, alt, title, attributes) {
+    var image;
+    image = new Image();
+
+    image.onload = function() {
+      $(this).attr({
+        width: $(image).width(),
+        height: $(image).height()
+      });
+    };
+
+    image.src = Drupal.imagecache.createUrl(preset, path);
+    image = $.extend(image, {
+      title: title,
+      alt: alt
+    }, attributes);
+
+    return image;
+  };
+})(jQuery);
+
+/*jslint browser: true, onevar: true, undef: true */
+