"Text and image " Panel -> "Weblink" Tab of Text

define web link address when user clicks on the text.

Replay Flash movie when user clicks on the text.

Define web page address when user clicks on the text.

Redirect to URL specified in the clickTAG argument:

The clickTAG is the tracking code assigned by the ad serving network to an individual ad. The clickTAG allows the network to register where the ad was displayed when it was clicked on. This click through data is reported to the ad serving servers so advertisers may determine the effectiveness of their campaign. For more details, you may refer to http://www.adobe.com/resources/richmedia/tracking/designers_guide/ .

To use clickTAG, please refer to the tutorial: How to add clickTAG to Flash banner?