Thread:Extension talk:Semantic Forms Inputs/jQuery data undefined error and 2 Listbox Appearance

I installed this extension mainly for the two listboxes but couldnt get it to work properly.

1) In my semantic form, I created a field with input type=two listboxes and when I preview this created form, this is showing this error:

ext.semanticforms.main: TypeError: jQuery(...).data(...) is undefined

The above error shows only when I preview the form in the "CreateForm" page but it seems to work when I actually try to fill-in the form. I am using MW 1.21 and I downloaded the development version of your extension from Git.

2) The listbox display seems different in the picture you had given in your extension page to what I see on my installed version. For example, the 2 listboxes are right next to each other but in your picture it is displayed nicely since the listboxes are separated and displayed with an arrow in between them. How can I get that appearance for these 2 listboxes?