diff --git a/apps/files_imageviewer/js/lightbox.js b/apps/files_imageviewer/js/lightbox.js
index 5f15c78691..b7a07c2408 100644
--- a/apps/files_imageviewer/js/lightbox.js
+++ b/apps/files_imageviewer/js/lightbox.js
@@ -1,55 +1,57 @@
-var lightBoxShown=false;
-$(document).ready(function() {
-	images={};//image cache
-	var overlay=$('<div id="lightbox_overlay"/>');
-	$( 'body' ).append(overlay);
-	var container=$('<div id="lightbox"/>');
-	$( 'body' ).append(container);
-	FileActions.register('image','View',function(filename){
-		var location='ajax/download.php?files='+filename+'&dir='+$('#dir').val();
-		overlay.show();
-		if(!images[location]){
-			var img = new Image();
-			img.onload = function(){
-				images[location]=img;
-				showLightbox(container,img);
+if(typeof ileActions!=='undefined'){
+	var lightBoxShown=false;
+	$(document).ready(function() {
+		images={};//image cache
+		var overlay=$('<div id="lightbox_overlay"/>');
+		$( 'body' ).append(overlay);
+		var container=$('<div id="lightbox"/>');
+		$( 'body' ).append(container);
+		FileActions.register('image','View',function(filename){
+			var location='ajax/download.php?files='+filename+'&dir='+$('#dir').val();
+			overlay.show();
+			if(!images[location]){
+				var img = new Image();
+				img.onload = function(){
+					images[location]=img;
+					showLightbox(container,img);
+				}
+				img.src = location;
+			}else{
+				showLightbox(container,images[location]);
 			}
-			img.src = location;
-		}else{
-			showLightbox(container,images[location]);
-		}
+		});
+		$( 'body' ).click(hideLightbox);
+		FileActions.setDefault('image','View');
 	});
-	$( 'body' ).click(hideLightbox);
-	FileActions.setDefault('image','View');
-});
 
-function showLightbox(container,img){
-	var maxWidth = $( window ).width() - 50;
-	var maxHeight = $( window ).height() - 50;
-	if( img.width > maxWidth || img.height > maxHeight ) { // One of these is larger than the window
-		var ratio = img.width / img.height;
-		if( img.height >= maxHeight ) {
-			img.height = maxHeight;
-			img.width = maxHeight * ratio;
-		} else {
-			img.width = maxWidth;
-			img.height = maxWidth * ratio;
+	function showLightbox(container,img){
+		var maxWidth = $( window ).width() - 50;
+		var maxHeight = $( window ).height() - 50;
+		if( img.width > maxWidth || img.height > maxHeight ) { // One of these is larger than the window
+			var ratio = img.width / img.height;
+			if( img.height >= maxHeight ) {
+				img.height = maxHeight;
+				img.width = maxHeight * ratio;
+			} else {
+				img.width = maxWidth;
+				img.height = maxWidth * ratio;
+			}
 		}
+		container.empty();
+		container.append(img);
+		container.css('top',Math.round( ($( window ).height() - img.height)/2));
+		container.css('left',Math.round( ($( window ).width() - img.width)/2));
+		$('#lightbox').show();
+		setTimeout(function(){
+			lightBoxShown=true;
+		},100);
 	}
-	container.empty();
-	container.append(img);
-	container.css('top',Math.round( ($( window ).height() - img.height)/2));
-	container.css('left',Math.round( ($( window ).width() - img.width)/2));
-	$('#lightbox').show();
-	setTimeout(function(){
-		lightBoxShown=true;
-	},100);
-}
 
-function hideLightbox(){
-	if(lightBoxShown){
-		$('#lightbox_overlay').hide();
-		$('#lightbox').hide();
-		lightBoxShown=false;
+	function hideLightbox(){
+		if(lightBoxShown){
+			$('#lightbox_overlay').hide();
+			$('#lightbox').hide();
+			lightBoxShown=false;
+		}
 	}
 }
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