only load image viewer when in file browser

apps/files_imageviewer/js/lightbox.js

@@ -1,5 +1,6 @@
-var lightBoxShown=false;
+if(typeof ileActions!=='undefined'){
-$(document).ready(function() {
+	var lightBoxShown=false;
+	$(document).ready(function() {
 		images={};//image cache
 		var overlay=$('<div id="lightbox_overlay"/>');
 		$( 'body' ).append(overlay);
@@ -21,9 +22,9 @@ $(document).ready(function() {
 		});
 		$( 'body' ).click(hideLightbox);
 		FileActions.setDefault('image','View');
-});
+	});
 
-function showLightbox(container,img){
+	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
@@ -44,12 +45,13 @@ function showLightbox(container,img){
 		setTimeout(function(){
 			lightBoxShown=true;
 		},100);
-}
+	}
 
-function hideLightbox(){
+	function hideLightbox(){
 		if(lightBoxShown){
 			$('#lightbox_overlay').hide();
 			$('#lightbox').hide();
 			lightBoxShown=false;
 		}
+	}
 }