Bug 147834 Drill through multi-page report document will only show the first page when preview in HTML/PDF
Description: When target report document has multiple pages, drill through will only show the first page. Steps to reproduce: 1. New a report with multiple pages, preview it in web viewer to create report document 2. New another report, drill through to this report document 3. Preview in HTML/PDF, only the first page of target document shows up Notes: Preview in WebViewer will get correct result
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
{
	private static ReportEngineService instance;
	/**
	 * Report engine instance.
	 */
	private IReportEngine engine = null;
	/**
	 * Static engine config instance.
	 */
	private EngineConfig config = null;
	/**
	 * Image directory for report images and charts.
	 */
	private String imageDirectory = null;
	/**
	 * URL accesses images.
	 */
	private String imageBaseUrl = null;
	/**
	 * Image handler instance.
	 */
	private HTMLServerImageHandler imageHandler = null;
	/**
	 * Web app context path.
	 */
	private String contextPath = null;
	/**