code: function (callback) {
  		
  		var fn, scope;
  		
  		fn = callback.fn;
  		scope = callback.scope;
  		
  		if (this.formAvailable) {
  			fn.call(scope);
  		} else {
  			this.formAvailableEvt.subscribe(fn, scope, true);
  		}
  		
  	}
docs: Execute a callback as soon as the form is available
  @param {Object} callback An object like {fn: my_function, scope: my_scope}