diff --git a/source/external/three.model.loader.js b/source/external/three.model.loader.js
index 7e6157e..6e7a0d2 100644
--- a/source/external/three.model.loader.js
+++ b/source/external/three.model.loader.js
@@ -44,11 +44,22 @@ OV.ThreeModelLoader = class
 			obj.OnFilesLoaded ();
 		});
 	}
+
+	ReloadFiles ()
+	{
+		if (this.inProgress) {
+			return;
+		}
+
+		this.inProgress = true;
+        this.callbacks.onLoadStart ();
+		this.OnFilesLoaded ();		
+	}
     
 	OnFilesLoaded ()
 	{
 		let obj = this;
-		this.callbacks.onFilesLoaded ();
+		this.callbacks.onImportStart ();
 		OV.RunTaskAsync (function () {
 			obj.importer.Import ({
 				success : function (importResult) {
@@ -65,7 +76,7 @@ OV.ThreeModelLoader = class
 	OnModelImported (importResult)
 	{
 		let obj = this;
-		this.callbacks.onModelImported ();
+		this.callbacks.onVisualizationStart ();
 		OV.ConvertModelToThreeMeshes (importResult.model, {
 			onTextureLoaded : function () {
 				obj.callbacks.onTextureLoaded ();
diff --git a/source/viewer/domviewer.js b/source/viewer/domviewer.js
index 45f9c90..4692c74 100644
--- a/source/viewer/domviewer.js
+++ b/source/viewer/domviewer.js
@@ -23,10 +23,10 @@ OV.Init3DViewerElements = function ()
                 element.appendChild (progressDiv);
                 progressDiv.innerHTML = 'Loading model...';
             },
-            onFilesLoaded : function () {
+            onImportStart : function () {
                 progressDiv.innerHTML = 'Importing model...';
             },
-            onModelImported : function () {
+            onVisualizationStart : function () {
                 progressDiv.innerHTML = 'Visualizing model...';
             },
             onModelFinished : function (importResult, threeMeshes) {
diff --git a/website/o3dv/loader.js b/website/o3dv/loader.js
index 5060807..d84bd47 100644
--- a/website/o3dv/loader.js
+++ b/website/o3dv/loader.js
@@ -40,10 +40,10 @@ OV.InitModelLoader = function (modelLoader, callbacks)
             progressDialog = new OV.ProgressDialog ();
             progressDialog.Show ('Loading Model');
         },
-        onFilesLoaded : function () {
+        onImportStart : function () {
             progressDialog.SetText ('Importing Model');
         },
-        onModelImported : function () {
+        onVisualizationStart : function () {
             progressDialog.SetText ('Visualizing Model');
         },
         onModelFinished : function (importResult, threeMeshes) {