Bug 313882 [Regression]pageoverflow plus pagebreakinternal shows different pdf pages in web viewer and preview
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/ContainerArea.java
protected void calculateSpecifiedHeight( IContent content )
	{
		if ( content == null )
			return;
		DimensionType height = content.getHeight( );
		if ( height != null )
		{
			specifiedHeight = getDimensionValue( content, height );
		}
	}
	public void setAllocatedY( int ay )
	{
		if ( hasStyle )
		{
			y = ay + localProperties.getMarginTop( );
		}
		else
		{
			y = ay;
		}
	}
	
	public void setAllocatedX( int ax )
	{
		if ( hasStyle )
		{
			x = ax + localProperties.getMarginLeft( );
		}
		else
		{