code: function ( )
  	{
  	  var anHidden = this.dom.print.hidden;
  
  		for ( var i=0, iLen=anHidden.length ; i<iLen ; i++ )
  		{
  			anHidden[i].node.style.display = anHidden[i].display;
  		}
  		anHidden.splice( 0, anHidden.length );
  	}
docs: Resume the display of all TableTools hidden nodes
  @method  _fnPrintShowNodes
  @returns void
  @private