From 5cee8ff9276c7c2e00c0f20fd6aa74628e1cb684 Mon Sep 17 00:00:00 2001
From: "Dario Javier Cravero (atlas)" <dario@starlight.ie>
Date: Wed, 3 Nov 2010 12:17:34 +0000
Subject: [PATCH] Fixed filtering to work with optgroup

---
 src/jquery.multiselect.filter.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/jquery.multiselect.filter.js b/src/jquery.multiselect.filter.js
index 7aa7e77..326d7db 100644
--- a/src/jquery.multiselect.filter.js
+++ b/src/jquery.multiselect.filter.js
@@ -92,14 +92,13 @@
 		},
 		
 		updateCache: function(){
-			var optiontags = this.element.children(),
-				isOptgroup = optiontags[0].tagName === "OPTGROUP" || false;
+			var optiontags = this.element.children();
 			
 			this.cache = optiontags.map(function(){
 				var self = $(this);
 				
 				// account for optgroups
-				if( isOptgroup ){
+				if( this.tagName === "OPTGROUP" ){
 					self = self.children();
 				}