Bug 204245 Blank column on visibility column in excel[0300]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/buffermgr/TableContentLayout.java
String style = null;
					CellContent cellContent = (CellContent) cells[cellId]
							.getContent( );					
					if ( cellContent != null )
					{
						ICellContent cc = cellContent.getContent( );
						if ( cc != null )
						{
							style = cc.getStyle( ).getCssText( );
						}
					}
					hint.addUnresolvedCell( style, cells[cellId].getColId( ),
							cells[cellId].getColSpan( ), cells[cellId]
									.getRowSpan( ) );
				}
			}
			this.rowHint = hint;
		}
		
	}
	public int getCurrentRowID( )
	{
		return rowCount - 1;
	}
	
	public boolean isVisible( ICellContent cell )
	{
		IElement parent = cell.getParent( );
		if ( parent instanceof IContent )