Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/BirtContext.java
{
	/**
	 * Constructor.
	 * 
	 * @param request
	 * @param response
	 */
	public BirtContext( HttpServletRequest request, HttpServletResponse response )
	{
		super( request, response );
	}
	
	/**
	 * Local init.
	 * 
	 * @return
	 */
	protected void __init( )
	{
		this.bean = ( ViewerAttributeBean ) request.getAttribute( "attributeBean" ); 
		if ( bean == null )
		{
			bean = new ViewerAttributeBean( request );
		}
		request.setAttribute( "attributeBean", bean ); 
	}
}