Bug 168304 Context root issue when set to other BIRT Web Project.[0603]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/taglib/ReportTag.java
/**
	 * Viewer Report Design Handle
	 */
	private IViewerReportDesignHandle reportDesignHandle;
	/**
	 * Check whether document existed in URL
	 */
	private boolean documentInUrl = false;
	/**
	 * Input Options information
	 */
	private InputOptions options;
	/**
	 * process tag function
	 * 
	 * @see org.eclipse.birt.report.taglib.AbstractBaseTag#__process()
	 */
	public void __process( ) throws Exception
	{
		
		outputFormat = BirtTagUtil.getFormat( viewer.getFormat( ) );
		
		
		if ( !outputFormat
				.equalsIgnoreCase( ParameterAccessor.PARAM_FORMAT_HTML )
				|| BirtTagUtil.convertToBoolean( viewer
						.getForceParameterPrompting( ) )
				|| viewer.isForceIFrame( ) )
		{
			__handleIFrame( viewer.createURI( IBirtConstants.VIEWER_PREVIEW ),