Catch the event when a URL Link is tapped within TTStyledTextLabel

I'm working with TTStyledTextLabel and I'm facing the following problems. I do appreciate if you could take a look and support me somehow to fix them.

The app I'm developing has been developed by another developer. It's based on the standard UITableViewController. However, according to the requirement, I have to use TTStyledText inside of the UITableViewCell.

The TTStyledTextLabel is used to display content which might consist of (1) links to websites; or (2) internal links with a parameter, the app will process that parameter to display appropriate content.

The problems I'm facing are:

1. When the TTStyledTextLabel has a link, and user tap on the link, other part of the content is gone, just the link is displayed :( I need the full content remained.

2. I don't know how to catch the tapped URL link for further progress. I need to catch that URL to get the parameter.

I'm quite new to Three20, please give me some clues. Thank you very much!

Best Regards, Thang

In order to answer my second question (to catch the URL), I implement the TTNavigatorDelegate like this

    - (BOOL)navigator: (TTBaseNavigator *)navigator shouldOpenURL:(NSURL *) URL {
        NSString *query = URL.query;

        //process the query

        return NO;
    }

That's works well! However, the first question still remains. When a link is tapped, other texts are disabled :(