Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
{
				if ( CSSConstants.CSS_BOTTOM_VALUE.equals( verticalAlign ) )
				{
					iter = cell.getChildren( );
					while ( iter.hasNext( ) )
					{
						AbstractArea child = (AbstractArea) iter.next( );
						child.setAllocatedPosition( child.getAllocatedX( ),
								child.getAllocatedY( ) + offset );
					}
				}
				else if ( CSSConstants.CSS_MIDDLE_VALUE.equals( verticalAlign ) )
				{
					iter = cell.getChildren( );
					while ( iter.hasNext( ) )
					{
						AbstractArea child = (AbstractArea) iter.next( );
						child.setAllocatedPosition( child.getAllocatedX( ),
								child.getAllocatedY( ) + offset / 2 );
					}
				}
			}
		}
	}
	/**
	 * Class represents drop cell information
	 * 
	 * 
	 */
	class DropCellInfo