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/html/HTMLAbstractLM.java
{
		if ( content == null )
		{
			return false;
		}
		boolean ret = hasMasterPageChanged( );
		IStyle style = content.getStyle( );
		String pageBreak = style.getPageBreakBefore( );
		if ( IStyle.CSS_ALWAYS_VALUE == pageBreak
				|| IStyle.CSS_LEFT_VALUE == pageBreak
				|| IStyle.CSS_RIGHT_VALUE == pageBreak
				|| IStyle.BIRT_SOFT_VALUE == pageBreak )
		{
			style.setPageBreakBefore( IStyle.CSS_AUTO_VALUE );
			return true;
		}
		return ret;
	}
	protected boolean needPageBreakAfter( )
	{
		if ( content == null )
		{
			return false;
		}
		IStyle style = content.getStyle( );
		String pageBreak = style.getPageBreakAfter( );
		if ( IStyle.CSS_ALWAYS_VALUE == pageBreak
				|| IStyle.CSS_LEFT_VALUE == pageBreak
				|| IStyle.CSS_RIGHT_VALUE == pageBreak )
		{