Using the itemBox api

We start out with a simple itemBox (b1)

apple
This is an apple

Box

Content

Header

Toggler

Draggable

As you can see these function works unconditionally. If you want to control conditions that is all up to your code. (for instance make sure that the content is on befor you turn off the toggler)

It is a good idea look at the source
and inspect elements 
function hideBox(id){
  itemHolder.getBoxById(id).hideBox();
}
function showBox(id){
  itemHolder.getBoxById(id).showBox();
}
function hideContent(id){
  itemHolder.getBoxById(id).hideContent();
}
function showContent(id){
  itemHolder.getBoxById(id).showContent();
}
function hideHeader(id){
  itemHolder.getBoxById(id).hideHeader();
}
function showHeader(id){
  itemHolder.getBoxById(id).showHeader();
}
function hideToggler(id){
  itemHolder.getBoxById(id).hideToggler();
}
function showToggler(id){
  itemHolder.getBoxById(id).showToggler();
}
function turnOffDrag(id){
  itemHolder.getBoxById(id).turnOffDrag();
}
function turnOnDrag(id){
  itemHolder.getBoxById(id).turnOnDrag();
}