setting default image in dhtmlxcombo

I am attempting to change the default image used in dhtmlxcombo but the addition of dhtmlxcombo_extra.js to my script causes an error:

Error: dhtmlXCombo_defaultOption is not defined

Source File: qi-sales.com/common/javaScript/d … o_extra.js

Line: 11



The URL I am specifying is live: I have tested it, and I have specified the image using a fully qualified URI, a relative URI and an absolute URI.



I am using //v.1.3 build 81009, the latest version of dhtmlxcombo.

Please be sure that you have included both
dhtmlxcombo.js
dhtmlxcombo_extra.js
and “extra” js included after main one.