Added fix for bug #1567 - uppercase nodeName test in .add().

diff --git a/src/core.js b/src/core.js
index d059564..1236f1c 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -282,7 +282,7 @@ jQuery.fn = jQuery.prototype = {
                        this.get(),
                        t.constructor == String ?
                                jQuery(t).get() :
-                               t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
+                               t.length != undefined && (!t.nodeName || jQuery.nodeName(t, "form")) ?
                                        t : [t] )
                );
        },