Bug 166001 The webpage can't be found in WebView, if "WebViewer.startup( null );" is not called.
Now I'm using a SVG viewer to preview report in designer, it need not a HTTP server. So I removed "WebViewer.startup( null );" from designer's initial process, but I found those "web view as ..." all can not open a web page.
viewer/org.eclipse.birt.report.viewer/src/org/eclipse/birt/report/viewer/utilities/WebViewer.java
}
		if ( "true".equalsIgnoreCase( svgFlag ) ) 
		{
			bSVGFlag = true;
		}
		String masterPageContent = ViewerPlugin.getDefault( )
				.getPluginPreferences( ).getString( MASTER_PAGE_CONTENT );
		boolean bMasterPageContent = true;
		if ( "false".equalsIgnoreCase( masterPageContent ) ) 
		{
			bMasterPageContent = false;
		}
		
		String encodedResourceFolder = null;
		try
		{
			if ( resourceFolder != null )
				encodedResourceFolder = URLEncoder.encode( resourceFolder,
						"utf-8" ); 
		}
		catch ( UnsupportedEncodingException e )
		{
			
		}
		if ( encodedResourceFolder == null )
			encodedResourceFolder = ""; 
		
		return getBaseURL( )
				+ servletName
				+ "?"