Bug 313459 Problem with % when generating images in tables.
See the attached BirtProject, it has two reports. Each identical except for this difference: The image width/height is set to a %age value (50%) in one (TestImage.rptdesign) and not-set in the other (TestImageWorking.rptdesign). TestImage.rptdesign does not display the image in pdf, but works fine in html. TestImageWorking.rptdesign shows the image in both pdf and html. The %age setting seems to cause the problem in pdf format.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/ImageAreaLayout.java
}
		/**
		 * Creates an image map container, which is an empty container with an
		 * hyper link.
		 * 
		 * @param x
		 *            x coordinate of lower left corner of the container.
		 * @param y
		 *            y coordinate of lower left corner of the container.
		 * @param width
		 *            width of the container.
		 * @param height
		 *            height of the container.
		 * @param link
		 *            destination of the hyperlink.
		 */
		private void createImageMapContainer( int x, int y, int width,
				int height, IHyperlinkAction link )
		{
			BlockContainerArea area = new BlockContainerArea( );
			area.setAction( link );
			area.setPosition( x, y );
			area.setWidth( width );
			area.setHeight( height );
			root.addChild( area );
		}
		/**
		 * Calculates the absolute positions of image map when given the
		 * position of image. The image map position is relative to the left up
		 * corner of the image.