hat we have a column id
	if ( typeof iColumn == "undefined" ) return new Array();
	
	// by default we only want unique data
	if ( typeof bUnique == "undefined" ) bUnique = true;
	
	// by default we do want to only look at filtered data
	if ( typeof bFiltered == "undefined" ) bFiltered = true;
	
	// by default we do not want to include empty values
	if ( typeof bIgnoreEmpty == "undefined" ) bIgnoreEmpty = true;
	
	// list of rows which we're going to loop through
	var aiRows;
	
	// use only filtered rows
	if