diff --git a/sites/all/modules/dart/dart.js b/sites/all/modules/dart/dart.js
index 947dd95..77dafe8 100755
--- a/sites/all/modules/dart/dart.js
+++ b/sites/all/modules/dart/dart.js
@@ -9,16 +9,20 @@ Drupal.DART = {};
  * Using document.write, add a DART tag to the page
  */
 Drupal.DART.tag = function (pos, sz, tag) {
-	
+
   var options = 'type="text/javascript"';
   var tagname = 'script';
+  var tagsite = '';
+  if (tag.site != null) {
+    tagsite = '.' + tag.site;
+  }
   if(tag.options.method == 'adi') {
 	tagname = 'iframe';		
 	options = 'frameborder="0" scrolling="no" width="' + sz.split("x")[0] + '" height="' + sz.split("x")[1] + '"';		
   }
   ad  = '<' + tagname + ' ' + options + ' src="';
   ad += Drupal.DART.dart_url + "/" + tag.options.method + "/";
-  ad += tag.prefix + '.' + tag.site + "/" + tag.zone + ";";
+  ad += tag.prefix + tagsite + "/" + tag.zone + ";";
   ad += this.keyVal('pos', pos, false);
   ad += this.keyVal('sz', sz, false);
   ad += this.keyVals(tag.options.keyvals);