I have a form with 2 Sections that are positioned side by side.

.DisplayPanes {display:inline-block;width:50%;vertical-align:top;}

I want to have a Drop Down field on the form with choices (Tall, Wide) to change the formatting of the Form in the following way.

1. When Tall, set the Form width (.cf-formwrap) to 800px;
     When Wide set the (.cf-formwrap) to 1800px;

2. When Tall, the Sections should appear one on top of the other
    When Wide, the Sections should appear Side by Side

(I expect this can be accomplished by either addClass or RemoveClass)

Any help from the coding community is appreciated :)

@SteveKnowlton