code: function ( i, nTh )
  	{
  		var that = this;
  		$(nTh).on( 'mousedown.ColReorder', function (e) {
  			e.preventDefault();
  			that._fnMouseDown.call( that, e, nTh );
  		} );
  	}
docs: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  Mouse drop and drag
   
  Add a mouse down listener to a particluar TH element
  @method  _fnMouseListener
  @param   int i Column index
  @param   element nTh TH element clicked on
  @returns void
  @private