Dynamic textfield

Hi,

I have created a dynamic text and provided a URL in the link field. When clicked it takes me to the webpage provided in the link. I want this textfield to be displayed at certain times, so i made its linktext._alpha=0. Now the text is displayed only when its alpha=100 and the link works fine, but even when the text is hidden the link shows(i.e.hand symbol appears and when clicked goes to the url provided). How to make it work perfectly that the link to work only when the text is displayed.

Thanks

aruna