Bug 2195: select[n] == select.options[n], new nonstandard DOM interface

dom/public/idl/html/HTMLSelectElement.idl

@@ -19,3 +19,10 @@
    void                      blur();
    void                      focus();
  };
+
+ interface NSHTMLSelectElement {
+ /* IID: { 0xa6cf9105, 0x15b3, 0x11d2, \
+  { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } } */
+
+   Node                      item(in unsigned long index);
+ };