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
/**
	 * end output the content
	 */
	protected void end( )
	{
		if ( emitter != null )
		{
			ContentEmitterUtil.endContent( content, emitter );
		}
	}
	/**
	 * get the first table layout manager which is the ancestor of this layout
	 * manager.
	 * 
	 * @return TableLayoutManager if any, NULL otherwise.
	 */
	protected HTMLTableLM getTableLayoutManager( )
	{
		HTMLAbstractLM lm = parent;
		while ( lm != null )
		{
			if ( lm instanceof HTMLTableLM )
			{
				return (HTMLTableLM) lm;
			}
			lm = lm.getParent( );
		}
		assert false;
		return null;
	}