diff --git a/source/viewer/urlutils.js b/source/parameters/paramutils.js
similarity index 100%
rename from source/viewer/urlutils.js
rename to source/parameters/paramutils.js
diff --git a/tools/config.json b/tools/config.json
index 722cd6b..7c7aafe 100644
--- a/tools/config.json
+++ b/tools/config.json
@@ -42,11 +42,11 @@
 		"source/export/exporter.js",
 		"source/external/three.converter.js",
 		"source/external/three.model.loader.js",
+		"source/parameters/paramutils.js",
 		"source/viewer/domutils.js",
 		"source/viewer/navigation.js",
 		"source/viewer/viewer.js",
-		"source/viewer/domviewer.js",
-		"source/viewer/urlutils.js"
+		"source/viewer/domviewer.js"
 	],
 	"website_files" : [
 		"website/o3dv/utils.js",
diff --git a/website/embed.html b/website/embed.html
index 1a3c815..2b052db 100644
--- a/website/embed.html
+++ b/website/embed.html
@@ -55,11 +55,11 @@
 	<script type="text/javascript" src="../source/export/exporter.js"></script>
 	<script type="text/javascript" src="../source/external/three.converter.js"></script>
 	<script type="text/javascript" src="../source/external/three.model.loader.js"></script>
+	<script type="text/javascript" src="../source/parameters/paramutils.js"></script>
 	<script type="text/javascript" src="../source/viewer/domutils.js"></script>
 	<script type="text/javascript" src="../source/viewer/navigation.js"></script>
 	<script type="text/javascript" src="../source/viewer/viewer.js"></script>
 	<script type="text/javascript" src="../source/viewer/domviewer.js"></script>
-	<script type="text/javascript" src="../source/viewer/urlutils.js"></script>
 	<!-- importer end -->
 	
 	<!-- website start -->
diff --git a/website/index.html b/website/index.html
index 064aa4d..5cc2ddb 100644
--- a/website/index.html
+++ b/website/index.html
@@ -55,11 +55,11 @@
 	<script type="text/javascript" src="../source/export/exporter.js"></script>
 	<script type="text/javascript" src="../source/external/three.converter.js"></script>
 	<script type="text/javascript" src="../source/external/three.model.loader.js"></script>
+	<script type="text/javascript" src="../source/parameters/paramutils.js"></script>
 	<script type="text/javascript" src="../source/viewer/domutils.js"></script>
 	<script type="text/javascript" src="../source/viewer/navigation.js"></script>
 	<script type="text/javascript" src="../source/viewer/viewer.js"></script>
 	<script type="text/javascript" src="../source/viewer/domviewer.js"></script>
-	<script type="text/javascript" src="../source/viewer/urlutils.js"></script>
 	<!-- importer end -->
 	
 	<!-- website start -->
diff --git a/website/o3dv/hashhandler.js b/website/o3dv/hashhandler.js
index b7c9eaf..87fc927 100644
--- a/website/o3dv/hashhandler.js
+++ b/website/o3dv/hashhandler.js
@@ -42,9 +42,8 @@ OV.HashHandler = class
 
     SetModelFilesToHash (files)
     {
-        let builder = new OV.UrlParamBuilder ();
-        builder.AddModelUrls (files);
-        this.SetHash (builder.GetUrlParams ());
+        let params = OV.CreateUrlParameters (files, null);
+        this.SetHash (params);
     }
 
     GetFromHash (keyword)