Bug 193875 we can not get an entir url by IHTMLActionHandler
we can not get an entir url by IHTMLActionHandler, so word emitter dose not write the right url. now hyperlink drill through in word emitter doesn't work.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
*/
	public static Locale getLocaleFromString( String locale )
	{
		if ( locale == null || locale.length( ) <= 0 )
		{
			return null;
		}
		int index = locale.indexOf( '_' );
		if ( index != -1 )
		{
			String language = locale.substring( 0, index );
			String country = locale.substring( index + 1 );
			return new Locale( language, country );
		}
		return new Locale( locale );
	}
	/**
	 * Get report locale in string.
	 * 
	 * @param request
	 *            http request
	 * @return report String
	 */
	public static String getLocaleString( HttpServletRequest request )
	{
		return getParameter( request, PARAM_LOCALE );
	}
	/**
	 * Get report page from Http request. If frameset pattern, default page is
	 * 1.