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
topCellStyle = lastRowContent[columnID].cell
							.getComputedStyle( );
				}
			}
		}
		if ( rowID == 0 )
		{
			
			bcr.resolveTableTopBorder( tableStyle, rowStyle, columnStyle,
					cellContentStyle, cellAreaStyle );
			
			if ( columnID == 0 )
			{
				bcr.resolveTableLeftBorder( tableStyle, rowStyle, columnStyle,
						cellContentStyle, cellAreaStyle );
			}
			else
			{
				bcr.resolveCellLeftBorder( preColumnStyle, columnStyle,
						leftCellContentStyle, cellContentStyle, cellAreaStyle );
			}
			
			if ( columnID + colSpan == columnNumber )
			{
				bcr.resolveTableRightBorder( tableStyle, rowStyle, columnStyle,
						cellContentStyle, cellAreaStyle );
			}
		}
		else
		{