Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
slotID = getDefaultSlotID( parent );
		}
		return slotID;
	}
	/**
	 * Find the position of the element. If the element is null, the position is
	 * last
	 * 
	 * @param parent
	 * @param element
	 * @return position
	 */
	public static int findInsertPosition( DesignElementHandle parent,
			DesignElementHandle element )
	{
		
		if ( element == null )
		{
			SlotHandle slotHandle = parent.getSlot( DEUtil
					.getDefaultSlotID( parent ) );
			if ( slotHandle != null )
			{
				return slotHandle.getCount( );
			}
			return -1;
		}
		return DEUtil.findPos( parent, element.getContainerSlotHandle( )
				.getSlotID( ), element );
	}
	/**