diff -urEb 3dhop.orig/3DHOP_all_tools.html 3dhop/3DHOP_all_tools.html
--- 3dhop.orig/3DHOP_all_tools.html	2024-06-15 15:43:28.329045772 +0200
+++ 3dhop/3DHOP_all_tools.html	2024-06-15 15:50:04.629862005 +0200
@@ -106,6 +106,25 @@
 </body>
 
 <script type="text/javascript">
+// http://stackoverflow.com/a/21903119/881731
+function GetUrlParameter(sParam)
+{
+  var sPageURL = decodeURIComponent(window.location.search.substring(1));
+  var sURLVariables = sPageURL.split('&');
+
+  for (var i = 0; i < sURLVariables.length; i++) {
+    var sParameterName = sURLVariables[i].split('=');
+
+    if (sParameterName[0] === sParam) {
+      return sParameterName[1] === undefined ? '' : sParameterName[1];
+    }
+  }
+
+  return '';
+};
+
+var instanceId = GetUrlParameter('instance');
+
 var presenter = null;
 
 function setup3dhop() {
@@ -113,7 +132,7 @@
 
 	presenter.setScene({
 		meshes: {
-			"mesh_1" : { url: "models/gargo.nxz" }
+			"mesh_1" : { url: "../3dhop-instances/" + instanceId + ".nxz" }
 		},
 		modelInstances : {
 			"model_1" : {