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
}
		else if ( fontSize == null )
		{
			fontSize = DesignChoiceConstants.FONT_SIZE_MEDIUM;
		}
		String rt = (String) DesignerConstants.fontMap.get( fontSize );
		if ( rt != null )
		{
			return Integer.parseInt( rt );
		}
		String[] sp = DEUtil.splitString( fontSize );
		if ( sp[0] != null && DEUtil.isValidNumber( sp[0] ) )
		{
			return (int) CSSUtil.convertToPoint( new DimensionValue( Double
					.parseDouble( sp[0] ), sp[1] ) );
		}
		return 10;
	}
	/**
	 * Get the handle's font size 's string value. if the font size is relative,
	 * calculate the actual size according to its parent.
	 * 
	 * @param handle
	 *            The style handle to work with the style properties of this
	 *            element.
	 * @return The font size string value.
	 */
	public static String getFontSize( DesignElementHandle handle )
	{
		if ( !( handle instanceof ReportItemHandle ) )