         var colIndex:int = coord.columnIndex;
         if (displayableColumns.length != _columns.length)
         {
-        	var n:int = displayableColumns.length;
+            var n:int = displayableColumns.length;
             for (var i:int = 0; i < n; i++)
             {
                 if (displayableColumns[i].colNum >= colIndex)

                isHeaderDragOutside = false;

                // If the mouse pointer over the right (ltr) or left (rtl) half
				// of the column, the drop indicator should be shown before the next column.
                if (pt.x > (columnXPos + headerInfo.column.width/2) || 
                    //Column groups which are partially visible should 
                    //show drag indicator at the right end only

 *  The class to use as the skin that indicates that 
 *  a column can be dropped in the current location.
 *
 *  @default mx.skins.halo.DataGridColumnDropIndicator (for both Halo and Spark themes)
 *  
 *  @langversion 3.0
 *  @playerversion Flash 9
