diff --git a/lib/torque/core.js b/lib/torque/core.js
index 7d5e7f1..1d51919 100644
--- a/lib/torque/core.js
+++ b/lib/torque/core.js
@@ -50,6 +50,10 @@
     return exports.torque.extend({}, a);
   }
 
+  exports.torque.isFunction = function(f) {
+    return typeof f == 'function' || false;
+  }
+
   exports.torque.isArray = function(value) {
       return value && typeof value == 'object' && Object.prototype.toString.call(value) == '[object Array]';
   };
@@ -65,4 +69,8 @@
     return !!document.createElement('canvas');
   };
 
+  exports.torque.flags = {
+    sprites_to_images: navigator.userAgent.indexOf('Safari') === -1
+  }
+
 })(typeof exports === "undefined" ? this : exports);
diff --git a/lib/torque/request.js b/lib/torque/request.js
index 93d6b80..47f82db 100644
--- a/lib/torque/request.js
+++ b/lib/torque/request.js
@@ -13,6 +13,10 @@
      // function name
      var fnName = options.callbackName || 'torque_' + Date.now();
 
+     if (torque.isFunction(fnName)) {
+       fnName = fnName();
+     }
+
      function clean() {
        head.removeChild(script);
        clearTimeout(timeoutTimer);