Drupal : How to add javascript function on click event of a cck check box?

I have added two fields one is check box and another one is text box to a content type and now i want to toggle the text box on cl开发者_如何学Goicking check box .Can any one help in doing so.

I just figured out the answer, we need to add in a conditional field setting (feature build in with drupal) amongst the two field to make them dependent on each other.