Bug 147407 Preview the attached report in the web viewer first time and then click the TOC button will cause NPE error
Description: It just can be reprouduced at first time preview. Step to reproduce: 1. please use attach report file 2. preview it in the web viewer 3. click the "Toggle table of contents" button Actual result: As the atteched screenshot shows,There is a NPE error.And if you preview it in the Web viewer again, the phenomenon is disappear.But reopen the eclipse and preview it at first time, it will be occured.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
return curMaxRows;
	}
	/**
	 * Get report element's iid.
	 * 
	 * @param request
	 * @return report element's iid
	 */
	public static String getIId( HttpServletRequest request )
	{
		return getReportParameter( request, PARAM_IID, null );
	}
	/**
	 * Get report locale from Http request.
	 * 
	 * @param request
	 *            http request
	 * @return report locale
	 */
	public static Locale getLocale( HttpServletRequest request )
	{
		Locale locale = null;
		
		locale = getLocaleFromString( getParameter( request, PARAM_LOCALE ) );
		
		if ( locale == null )
			locale = request.getLocale( );
		
		if ( locale == null )
			locale = webAppLocale;