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/service/actionhandler/AbstractRenderImageActionHandler.java
package org.eclipse.birt.report.service.actionhandler;
import java.io.IOException;
import java.rmi.RemoteException;
import javax.servlet.ServletOutputStream;
import javax.xml.namespace.QName;
import org.apache.axis.AxisFault;
import org.eclipse.birt.report.context.IContext;
import org.eclipse.birt.report.service.api.InputOptions;
import org.eclipse.birt.report.service.api.ReportServiceException;
import org.eclipse.birt.report.soapengine.api.GetUpdatedObjectsResponse;
import org.eclipse.birt.report.soapengine.api.Operation;
import org.eclipse.birt.report.utility.ParameterAccessor;
abstract public class AbstractRenderImageActionHandler extends
		AbstractBaseActionHandler
{
	public AbstractRenderImageActionHandler( IContext context,
			Operation operation, GetUpdatedObjectsResponse response )
	{
		super( context, operation, response );
	}
	protected void __execute( ) throws RemoteException
	{
		context.getResponse( ).setContentType( "image" ); 
		String imageId = context.getRequest( ).getParameter(