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
final public static String MASTER_PAGE_CONTENT = "master_page_content"; 
	
	final public static String PREVIEW_MAXROW = "preview_maxrow"; 
	
	/**
	 * Key to indicate the format of the preview.
	 */
	public final static String FORMAT_KEY = "FORMAT_KEY"; 
	/**
	 * Key to indicate the 'allowPage' control of the preview.
	 */
	public final static String ALLOW_PAGE_KEY = "ALLOW_PAGE_KEY"; 
	/**
	 * Key to indicate the 'servletName' of the preview.
	 */
	public final static String SERVLET_NAME_KEY = "SERVLET_NAME_KEY"; 
	/**
	 * Key to indicate the 'resourceFolder'.
	 */
	public final static String RESOURCE_FOLDER_KEY = "RESOURCE_FOLDER_KEY"; 
	/**
	 * Key to indicate the 'maxRows'
	 */
	public final static String MAX_ROWS_KEY = "MAX_ROWS_KEY"; 
	/**
	 * locale mapping. Save some time.
	 */
	public static TreeMap LocaleTable = null;
	static
	{