diff --git a/static/sdk.js b/static/sdk.js
index 11ff964..1c1bd02 100644
--- a/static/sdk.js
+++ b/static/sdk.js
@@ -67,6 +67,9 @@ var contented = (function() {
 		"getPreviewURL": function(id) {
 			return baseURL + "p/" + encodeURIComponent(id);
 		},
+		"getMultiPreviewURL": function(items) {
+			return baseURL + "p/" + encodeURIComponent(items.join("-"));
+		},
 		"getDownloadURL": function(id) {
 			return baseURL + "get/" + encodeURIComponent(id);
 		},