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/service/ReportEngineService.java
/**
	 * Check whether missing parameter or not.
	 * 
	 * @param task
	 * @param parameters
	 * @deprecated
	 * @return true if all the parameter values are valid, otherwise false
	 */
	public boolean validateParameters( IGetParameterDefinitionTask task,
			Map parameters )
	{
		assert task != null;
		assert parameters != null;
		boolean missingParameter = false;
		Collection parameterList = task.getParameterDefns( false );
		for ( Iterator iter = parameterList.iterator( ); iter.hasNext( ); )
		{
			IScalarParameterDefn parameterObj = (IScalarParameterDefn) iter
					.next( );
			
			
			
			String parameterName = parameterObj.getName( );
			Object parameterValue = parameters.get( parameterName );
			if ( parameterObj.isHidden( ) )
			{
				continue;
			}
			if ( parameterValue == null && !parameterObj.allowNull( ) )
			{