selenium select pop up windows

when you record pops up window without title, such as

 

        selenium.click("link=Assign Maintenance Windows");
        selenium.waitForPopUp("", "30000");
        selenium.addSelection("leftoverOutageWindows", "label=Default");

 

error display when replay it:[error] Element leftoverOutageWindows not found

 

how to resolve?

 

        exceptionCodeManagement.getAssignmaintaintenancewindows().click();
       
        winTitle = pageManager.getAllWindowTitles()[1];
       
        if(winTitle.isEmpty())
        exceptionCodeManagement.selectWindow("title=");
        else exceptionCodeManagement.selectWindow(winTitle);

 

BELIEVE YOU CAN FIND THE WINDOW!