public void run() {
		RWT.getServiceManager().registerServiceHandler( EXCEL_SERVICE_HANDLER,  new ExcelServiceHandler("projects.xls") );
	    RWT.getSessionStore().setAttribute( EXCEL_KEY, ProjectStatisticsToExcelResourse.getExcelContent(projectTypes) );
	    
	    URL url;
		try {
			url = new URL(createPDFUrl(EXCEL_KEY));
			PlatformUI.getWorkbench().getBrowserSupport().createBrowser("DownloadDialog").openURL(url);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (PartInitException e) {
			e.printStackTrace();
		}
	}
	
	
	private String createPDFUrl( String string ) {
	    StringBuffer url = new StringBuffer();
	    url.append(URLHelper.getURLString());
	    url.append( "?" );
	    url.append( IServiceHandler.REQUEST_PARAM );
	    url.append( "=" );
	    url.append( EXCEL_SERVICE_HANDLER );
	    url.append( "&nocache=" );
	    url.append( System.currentTimeMillis() );
	    String encodedURL = RWT.getResponse().encodeURL( url.toString() );
	    return encodedURL;
	  }

		InputStream in = (InputStream) RWT.getSessionStore().getAttribute(
				"excelKey");
		HttpServletResponse response = RWT.getResponse();
		response.setContentType("application/vnd.ms-excel");
		String contentDisposition = "attachment; filename=" + fileName;
		response.setHeader("Content-Disposition", contentDisposition);
		response.setHeader("Content-Transfer-Encoding", "binary");
		// response.setHeader("Pragma", "no-cache");
		// response.setHeader("Cache-Control", "no-cache, must-revalidate");
		//response.setContentLength(in.available());

		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		int next = in.read();
		while (next > -1) {
			bos.write(next);
			next = in.read();
		}
		bos.flush();
		byte[] result = bos.toByteArray();

		try {
			ServletOutputStream out = response.getOutputStream();
			out.write(result);
			out.flush();
		} catch (IOException e) {
			e.printStackTrace();
		}