code: function ()
  	{
  		var
  			that = this,
  			nCatcher = document.createElement('div');
  		nCatcher.className = "ColVis_catcher";
  
  		$(nCatcher).click( function () {
  			that._fnCollectionHide.call( that, null, null );
  		} );
  
  		return nCatcher;
  	}
docs: An element to be placed on top of the activate button to catch events
  @method  _fnDomCatcher
  @returns {Node} div container for the collection
  @private