Bug 180118 Enhance to print out source stack trace in preview mode.[0002]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/presentation/aggregation/layout/FramesetFragment.java
*/
	public void service( HttpServletRequest request,
			HttpServletResponse response ) throws ServletException,
			IOException, BirtException
	{
		BaseAttributeBean attrBean = (BaseAttributeBean) request
				.getAttribute( IBirtConstants.ATTRIBUTE_BEAN );
		if ( attrBean != null && !attrBean.isShowParameterPage( )
				&& !this.__checkHTMLFormat( request ) )
		{
			this.doPreService( request, response );
			this.doService( request, response );
			this.doPostService( request, response );
		}
		else
		{
			super.doPreService( request, response );
			super.doService( request, response );
			String target = super.doPostService( request, response );
			if ( target != null && target.length( ) > 0 )
			{
				RequestDispatcher rd = request.getRequestDispatcher( target );
				rd.include( request, response );
			}
		}
	}
	/**
	 * Check if use html format
	 * 
	 * @param request