1 files changed, 6 insertions, 0 deletions
diff --git a/static/script.js b/static/script.js
index 220451d9..0338cee5 100644
--- a/static/script.js
+++ b/static/script.js
@@ -1,3 +1,9 @@
+Array.prototype.deleteIndex = function(idx) {
+    if (idx != -1) {
+        this.splice(idx, 1);
+    }
+}
+
 /* -------------------------------------------------- */
 
 function round_time (time, fraction) {