bah, forgot to test it, this is the fix

diff --git a/form/form.js b/form/form.js
index bec8870..6404374 100644 (file)
--- a/form/form.js
+++ b/form/form.js
@@ -198,9 +198,7 @@ $.fn.serialize = function() {
                if ((p == 'SELECT' || p == 'OPTGROUP') && !this.selected) return;\r
 \r
                var n = this.name;\r
-               if (!n && p == 'OPTGROUP' && (par = par.parentNode))\r
-                       n = par.name;\r
-\r
+               if (!n) n = (p == 'OPTGROUP') ? par.parentNode.name : par.name;\r
                if (n == undefined) return;\r
 \r
                a.push({name: n, value: this.value});\r