I am using the following statement to make it readonly but it is not working.
$(\'#cf_1268591\').attr(\"readonly\", \"readonly\");
I don\
I've found, a better way to do this is to use CSS to remove pointer-events and modify the opacity on the drop down (try 0.5). This gives the appearance to the user that it is disabled as normal, but still posts data.
Granted this has some issues with backwards compatibility, but is in my opinion a better option than getting around the annoying disabled/readonly issue.